Math 7 Review (SP:1 - SP:5)

Last updated about 8 years ago

40 questions

Note from the author:

1

10

1

Library

Math 7 Review (SP:1 - SP:5)

Last updated about 8 years ago

40 questions

Note from the author:

Populations and Samples; Scatter plots

1

10

1

Students in two homeroom classes were surveyed to find out their favorite foods.
Results are shown in the table below.
Answer the questions on your own paper. Then type in the answers to questions 12-15 below.

Table Link

1

Use the table link in #11 to answer this question. In your answer, type only the number.

What percent of the students prefer ice cream as their favorite?

1

Use the table link in #11 to answer this question. In your answer, type only the number.

What percent did not prefer pizza as their favorite?

1

Use the table link in #11 to answer this question.

What percent prefer pizza or cheeseburger as their favorite?

1

Use the table link in #11 to answer this question.

If there are 1170 students in the school, how many would you expect to choose potato chips as their favorite food?

1

In a sample of voters in Harrisburg, 18 out of 25 favored creating a new shopping center. If 50,000 people vote in the next Harrisburg election, how many are likely to vote in favor of the new shopping center based on this sample?

1

Suppose 2/7 of students in your homeroom class wore shorts to school today. How many students would you have to survey randomly, on average, in order to get 14 students who wore shorts to school?

1

In a sample of people in the school district, 16 out of 25 favored building a new football stadium. If 6,000 people vote in the next local election, how many are likely to vote in favor of the new football stadium based on this sample?

1

Graph the data table below in a scatterplot.
Each column represents a point on the scatter plot.
The x axis represents the number of books.
The y axis represents the weight of the books.

Data Table Link

We have released a new and improved Graphing question type! Students will no longer be able to answer this question.

1

Make a scatter plot of the data found in the link below. Answer question #34 to explain if there is a trend in your scatter plot.

Data Table

We have released a new and improved Graphing question type! Students will no longer be able to answer this question.

1

Was there a trend in your scatter plot? If so, what was it?

1

In a survey, a group of middle school students were randomly chosen and asked whether they would attend the school dance. Of these students, 65% said yes. If 52 students responded yes, how many students were surveyed?

1

A university has 30,600 students. In a random sample of 240 students, 20 speak three or more languages. Predict the number of students at the university who speak three or more languages.
Type only the number in your answer.

Populations and Samples; Scatter plots

Carlos is at a local car dealership on Saturday between the hours of 8:00 am and 10:00 am to survey people on the most popular car.

Is Carlos's sample biased or unbiased?

Drag the description below to the correct category.

He will ask everyone that enters the dealership for his or her favorite make of car

Biased Sample
Unbiased Sample

Susan wants to know the favorite sport of students in her class.

She gives the student a number, puts all the numbers in a hat, draws 10 numbers, and surveys those selected students.

Biased Sample
Unbiased Sample

Leslie wants to determine eating habits of people in her neighborhood.

She asks 80 people at a neighborhood fast food restaurant about the last meal they ate.

Biased Sample
Unbiased Sample

Mary wants to determine the amount of time that 7th graders spend studying for their math exam.

She randomly selects 80 7th grade students to survey

Biased Sample
Unbiased Sample

David wants to find out the favorite sport of boys in his school.

He asks all boys on the school basketball team what's their favorite sport.

Biased Sample
Unbiased Sample

An unbiased sample is: (check all that apply)

representative of the population

not fair

selected at random

large enough to make informed decisions

A biased sample is one that does not fairly represent the population.

True

False

random sample - a sample in which each individual or object in the entire population does not have an equal chance of being selected.

True

False

A sample is part of a population.

True

False

Read the scenarios below.

Use the scenarios to categorize which choices best represent a population and which choices best represent a sample.

A beverage company wants to see if people in the United States like their new logo.
A famous rockband wants to see what what people, who bought their last album, think of their songs.
Before a nation wide election, a polling place was trying to see who would win.
A store owner wants to survey customers about their favorite toy.
*A mayor wants to see if the people in his town think he is doing a good job.

Drag the choices below to the correct category.

Does it represent a population or a sample?

The beverage company surveys every person in the United States
The band surveys a selection of 3,294 people who bought the album
The beverage company surveys a selection of shoppers from different states.
The store owner surveys all of the customers who buy toys
The band surveys every person who bought the album
A selection of voters of different ages are surveyed
242 voters are randomly selected from the town
The residents of the entire town are selected
All the voters are selected
The store owner randomly selects customers throughout the day

Population
Sample

Students in two homeroom classes were surveyed to find out their favorite foods.
Results are shown in the table below.
Answer the questions on your own paper. Then type in the answers to questions 12-15 below.

Table Link

Use the table link in #11 to answer this question. In your answer, type only the number.

What percent of the students prefer ice cream as their favorite?

Use the table link in #11 to answer this question. In your answer, type only the number.

What percent did not prefer pizza as their favorite?

Use the table link in #11 to answer this question.

What percent prefer pizza or cheeseburger as their favorite?

Use the table link in #11 to answer this question.

If there are 1170 students in the school, how many would you expect to choose potato chips as their favorite food?

In a sample of voters in Harrisburg, 18 out of 25 favored creating a new shopping center. If 50,000 people vote in the next Harrisburg election, how many are likely to vote in favor of the new shopping center based on this sample?

Suppose 2/7 of students in your homeroom class wore shorts to school today. How many students would you have to survey randomly, on average, in order to get 14 students who wore shorts to school?

In a sample of people in the school district, 16 out of 25 favored building a new football stadium. If 6,000 people vote in the next local election, how many are likely to vote in favor of the new football stadium based on this sample?

A candidate for student council wants to poll students to see how well his campaign is going. What collection method should he use to gather his information?

Polling random students in the library

Posting signs around school asking people to call him to voice their opinion

Polling every 5th student to enter the building in the morning

In a recent poll to measure Hugo's progress in his election campaign, 74 out of 150 people in the random sampling support him in his efforts. What is the best conclusion based on the polls?

Hugo is in a close race

Hugo is going to win the election

Hugo is going to lose the election

Describe the trend in the scatter plot. Click on the Link to see it.

#21 Scatterplot

positive

negative

no correlation

Describe the trend in the scatter plot. Click on the Link to see it.

#22 Scatterplot

positive

negative

no correlation

Describe the trend in the scatter plot. Click on the Link to see it.

#23 Scatterplot

positive

negative

no correlation

Describe the trend in the scatter plot. Click on the Link to see it.

#24 Scatterplot

positive

negative

no correlation

Describe the trend in the scatter plot. Click on the Link to see it.

#25 Scatterplot

positive

negative

no correlation

Graph the data table below in a scatterplot.
Each column represents a point on the scatter plot.
The x axis represents the number of books.
The y axis represents the weight of the books.

Data Table Link

We have released a new and improved Graphing question type! Students will no longer be able to answer this question.

Look at the scatterplot graph you made for question #26.
Describe the trend in your scatter plot

positive

no trend

negative

Identify the data set as having a positive, a negative, or no correlation.

#28 a person's height and the person's shoe size

positive

negative

no correlation

Identify the data set as having a positive, a negative, or no correlation.

#29 the age of a child and the amount of weekly allowance that the child receives

positive

negative

no correlation

Identify the data set as having a positive, a negative, or no correlation.

#30 the distance one lives from school and the length of the school day

positive

negative

no correlation

Identify the data set as having a positive, a negative, or no correlation.

#31 the average number of hours a child sleeps and the age of the child

positive

negative

no correlation

Carmella made a scatter plot comparing the daily temperature and the number of people at a beach. Click on the link below and look at the scatter plots. Which of the three scatterplots most likely represents the data? Choose A, B, or C.

Scatter Plot Link

Scatter plot A

Scatter plot B

Scatter plot C

Make a scatter plot of the data found in the link below. Answer question #34 to explain if there is a trend in your scatter plot.

Data Table

We have released a new and improved Graphing question type! Students will no longer be able to answer this question.

Was there a trend in your scatter plot? If so, what was it?

In a survey, a group of middle school students were randomly chosen and asked whether they would attend the school dance. Of these students, 65% said yes. If 52 students responded yes, how many students were surveyed?

A candidate for city mayor wants to poll voters to see how well his campaign is going. What collection method should he use to gather his information?

Polling random grocery shoppers at the local market

Posting signs around town asking people to call in to voice their opinion

Calling a group of randomly selected registered voters

An airline surveys passengers from a flight that is on time to determine if passengers on all flights are satisfied. This is a biased sample.

True

False

A newspaper randomly chooses 100 names from its subscriber database and then surveys those subscribers to find out if they read the restaurant reviews. This is a biased sample.

True

False

The manager of a bookstore sends a survey to 150 customers who were randomly selected from a customer list. This sample is not biased.

True

False

A university has 30,600 students. In a random sample of 240 students, 20 speak three or more languages. Predict the number of students at the university who speak three or more languages.
Type only the number in your answer.

Carlos is at a local car dealership on Saturday between the hours of 8:00 am and 10:00 am to survey people on the most popular car.

Is Carlos's sample biased or unbiased?

Drag the description below to the correct category.  

He will ask everyone that enters the dealership for his or her favorite make of car

Biased Sample

Unbiased Sample

Susan wants to know the favorite sport of students in her class.

She gives the student a number, puts all the numbers in a hat, draws 10 numbers, and surveys those selected students.

Biased Sample

Unbiased Sample

Leslie wants to determine eating habits of people in her neighborhood.

She asks 80 people at a neighborhood fast food restaurant about the last meal they ate.

Biased Sample

Unbiased Sample

Mary wants to determine the amount of time that 7th graders spend studying for their math exam.

She randomly selects 80 7th grade students to survey

Biased Sample

Unbiased Sample

David wants to find out the favorite sport of boys in his school.

He asks all boys on the school basketball team what's their favorite sport.

Biased Sample

Unbiased Sample

An unbiased sample is:  (check all that apply)

representative of the population

not fair

selected at random

large enough to make informed decisions

A biased sample is one that does not fairly represent the population.

True

False

random sample - a sample in which each individual or object in the entire population does not have an equal chance of being selected.

True

False

A sample is part of a population.

True

False

Read the scenarios below.  

Use the scenarios to categorize which choices best represent a population and which choices best represent a sample.  

*A beverage company wants to see if people in the United States like their new logo.
*A famous rockband wants to see what what people, who bought their last album, think of their songs.
*Before a nation wide election, a polling place was trying to see who would win.
*A store owner wants to survey customers about their favorite toy.
*A mayor wants to see if the people in his town think he is doing a good job.

Drag the choices below to the correct category.  

Does it represent a population or a sample?

The beverage company surveys every person in the United States

The band surveys a selection of 3,294 people who bought the album

The beverage company surveys a selection of shoppers from different states.

The store owner surveys all of the customers who buy toys

The band surveys every person who bought the album

A selection of voters of different ages are surveyed

242 voters are randomly selected from the town

The residents of the entire town are selected

All the voters are selected

The store owner randomly selects customers throughout the day

Population

Sample

A candidate for student council wants to poll students to see how well his campaign is going.  What collection method should he use to gather his information?

Polling random students in the library

Posting signs around school asking people to call him to voice their opinion

Polling every 5th student to enter the building in the morning

In a recent poll to measure Hugo's progress in his election campaign, 74 out of 150 people in the random sampling support him in his efforts.  What is the best conclusion based on the polls?

Hugo is in a close race

Hugo is going to win the election

Hugo is going to lose the election

Describe the trend in the scatter plot.  Click on the Link to see it.

#21 Scatterplot

positive

negative

no correlation

Describe the trend in the scatter plot.  Click on the Link to see it.

#22 Scatterplot

positive

negative

no correlation

Describe the trend in the scatter plot.  Click on the Link to see it.

#23 Scatterplot

positive

negative

no correlation

Describe the trend in the scatter plot.  Click on the Link to see it.

#24 Scatterplot

positive

negative

no correlation

Describe the trend in the scatter plot.  Click on the Link to see it.

#25 Scatterplot

positive

negative

no correlation

Look at the scatterplot graph you made for question #26.
Describe the trend in your scatter plot

positive

no trend

negative

Identify the data set as having a positive, a negative, or no correlation.

#28  a person's height and the person's shoe size

positive

negative

no correlation

Identify the data set as having a positive, a negative, or no correlation.

#29  the age of a child and the amount of weekly allowance that the child receives

positive

negative

no correlation

Identify the data set as having a positive, a negative, or no correlation.

#30 the distance one lives from school and the length of the school day

positive

negative

no correlation

Identify the data set as having a positive, a negative, or no correlation.

#31 the average number of hours a child sleeps and the age of the child

positive

negative

no correlation

Carmella made a scatter plot comparing the daily temperature and the number of people at a beach.  Click on the link below and look at the scatter plots.  Which of the three scatterplots most likely represents the data?  Choose A, B, or C.

Scatter Plot Link

Scatter plot A

Scatter plot B

Scatter plot C

A candidate for city mayor wants to poll voters to see how well his campaign is going.  What collection method should he use to gather his information?

Polling random grocery shoppers at the local market

Posting signs around town asking people to call in to voice their opinion

Calling a group of randomly selected registered voters

An airline surveys passengers from a flight that is on time to determine if passengers on all flights are satisfied.  This is a biased sample.

True

False

A newspaper randomly chooses 100 names from its subscriber database and then surveys those subscribers to find out if they read the restaurant reviews.  This is a biased sample.

True

False

The manager of a bookstore sends a survey to 150 customers who were randomly selected from a customer list.  This sample is not biased.

True

False

Math 7 Review (SP:1 - SP:5)

Math 7 Review (SP:1 - SP:5)

Students in two homeroom classes were surveyed to find out their favorite foods.Results are shown in the table below.Answer the questions on your own paper. Then type in the answers to questions 12-15 below.Table Link

Use the table link in #11 to answer this question. In your answer, type only the number.What percent of the students prefer ice cream as their favorite?

Use the table link in #11 to answer this question. In your answer, type only the number.What percent did not prefer pizza as their favorite?

Use the table link in #11 to answer this question.What percent prefer pizza or cheeseburger as their favorite?

Use the table link in #11 to answer this question.If there are 1170 students in the school, how many would you expect to choose potato chips as their favorite food?

In a sample of voters in Harrisburg, 18 out of 25 favored creating a new shopping center. If 50,000 people vote in the next Harrisburg election, how many are likely to vote in favor of the new shopping center based on this sample?

Suppose 2/7 of students in your homeroom class wore shorts to school today. How many students would you have to survey randomly, on average, in order to get 14 students who wore shorts to school?

In a sample of people in the school district, 16 out of 25 favored building a new football stadium. If 6,000 people vote in the next local election, how many are likely to vote in favor of the new football stadium based on this sample?

Graph the data table below in a scatterplot.Each column represents a point on the scatter plot.The x axis represents the number of books.The y axis represents the weight of the books.Data Table Link

Make a scatter plot of the data found in the link below. Answer question #34 to explain if there is a trend in your scatter plot.Data Table

Was there a trend in your scatter plot? If so, what was it?

In a survey, a group of middle school students were randomly chosen and asked whether they would attend the school dance. Of these students, 65% said yes. If 52 students responded yes, how many students were surveyed?

A university has 30,600 students. In a random sample of 240 students, 20 speak three or more languages. Predict the number of students at the university who speak three or more languages.Type only the number in your answer.

Carlos is at a local car dealership on Saturday between the hours of 8:00 am and 10:00 am to survey people on the most popular car.Is Carlos's sample biased or unbiased?Drag the description below to the correct category.

Susan wants to know the favorite sport of students in her class.

Leslie wants to determine eating habits of people in her neighborhood.

Mary wants to determine the amount of time that 7th graders spend studying for their math exam.

David wants to find out the favorite sport of boys in his school.

An unbiased sample is: (check all that apply)

A biased sample is one that does not fairly represent the population.

random sample - a sample in which each individual or object in the entire population does not have an equal chance of being selected.

A sample is part of a population.

Students in two homeroom classes were surveyed to find out their favorite foods.Results are shown in the table below.Answer the questions on your own paper. Then type in the answers to questions 12-15 below.Table Link

Use the table link in #11 to answer this question. In your answer, type only the number.What percent of the students prefer ice cream as their favorite?

Use the table link in #11 to answer this question. In your answer, type only the number.What percent did not prefer pizza as their favorite?

Use the table link in #11 to answer this question.What percent prefer pizza or cheeseburger as their favorite?

Use the table link in #11 to answer this question.If there are 1170 students in the school, how many would you expect to choose potato chips as their favorite food?

In a sample of voters in Harrisburg, 18 out of 25 favored creating a new shopping center. If 50,000 people vote in the next Harrisburg election, how many are likely to vote in favor of the new shopping center based on this sample?

Suppose 2/7 of students in your homeroom class wore shorts to school today. How many students would you have to survey randomly, on average, in order to get 14 students who wore shorts to school?

In a sample of people in the school district, 16 out of 25 favored building a new football stadium. If 6,000 people vote in the next local election, how many are likely to vote in favor of the new football stadium based on this sample?

A candidate for student council wants to poll students to see how well his campaign is going. What collection method should he use to gather his information?

In a recent poll to measure Hugo's progress in his election campaign, 74 out of 150 people in the random sampling support him in his efforts. What is the best conclusion based on the polls?

Describe the trend in the scatter plot. Click on the Link to see it.#21 Scatterplot

Describe the trend in the scatter plot. Click on the Link to see it.#22 Scatterplot

Describe the trend in the scatter plot. Click on the Link to see it.#23 Scatterplot

Describe the trend in the scatter plot. Click on the Link to see it.#24 Scatterplot

Describe the trend in the scatter plot. Click on the Link to see it.#25 Scatterplot

Graph the data table below in a scatterplot.Each column represents a point on the scatter plot.The x axis represents the number of books.The y axis represents the weight of the books.Data Table Link

Look at the scatterplot graph you made for question #26.Describe the trend in your scatter plot

Identify the data set as having a positive, a negative, or no correlation.#28 a person's height and the person's shoe size

Identify the data set as having a positive, a negative, or no correlation.#29 the age of a child and the amount of weekly allowance that the child receives

Identify the data set as having a positive, a negative, or no correlation.#30 the distance one lives from school and the length of the school day

Identify the data set as having a positive, a negative, or no correlation.#31 the average number of hours a child sleeps and the age of the child

Carmella made a scatter plot comparing the daily temperature and the number of people at a beach. Click on the link below and look at the scatter plots. Which of the three scatterplots most likely represents the data? Choose A, B, or C.Scatter Plot Link

Make a scatter plot of the data found in the link below. Answer question #34 to explain if there is a trend in your scatter plot.Data Table

Was there a trend in your scatter plot? If so, what was it?

In a survey, a group of middle school students were randomly chosen and asked whether they would attend the school dance. Of these students, 65% said yes. If 52 students responded yes, how many students were surveyed?

A candidate for city mayor wants to poll voters to see how well his campaign is going. What collection method should he use to gather his information?

An airline surveys passengers from a flight that is on time to determine if passengers on all flights are satisfied. This is a biased sample.

A newspaper randomly chooses 100 names from its subscriber database and then surveys those subscribers to find out if they read the restaurant reviews. This is a biased sample.

The manager of a bookstore sends a survey to 150 customers who were randomly selected from a customer list. This sample is not biased.

A university has 30,600 students. In a random sample of 240 students, 20 speak three or more languages. Predict the number of students at the university who speak three or more languages.Type only the number in your answer.

Students in two homeroom classes were surveyed to find out their favorite foods.
Results are shown in the table below.
Answer the questions on your own paper. Then type in the answers to questions 12-15 below.

Table Link

Use the table link in #11 to answer this question. In your answer, type only the number.

What percent of the students prefer ice cream as their favorite?

Use the table link in #11 to answer this question. In your answer, type only the number.

What percent did not prefer pizza as their favorite?

Use the table link in #11 to answer this question.

What percent prefer pizza or cheeseburger as their favorite?

Use the table link in #11 to answer this question.

If there are 1170 students in the school, how many would you expect to choose potato chips as their favorite food?

Graph the data table below in a scatterplot.
Each column represents a point on the scatter plot.
The x axis represents the number of books.
The y axis represents the weight of the books.

Data Table Link

Make a scatter plot of the data found in the link below. Answer question #34 to explain if there is a trend in your scatter plot.

Data Table

A university has 30,600 students. In a random sample of 240 students, 20 speak three or more languages. Predict the number of students at the university who speak three or more languages.
Type only the number in your answer.

Carlos is at a local car dealership on Saturday between the hours of 8:00 am and 10:00 am to survey people on the most popular car.

Is Carlos's sample biased or unbiased?

Drag the description below to the correct category.

Students in two homeroom classes were surveyed to find out their favorite foods.
Results are shown in the table below.
Answer the questions on your own paper. Then type in the answers to questions 12-15 below.

Table Link

Use the table link in #11 to answer this question. In your answer, type only the number.

What percent of the students prefer ice cream as their favorite?

Use the table link in #11 to answer this question. In your answer, type only the number.

What percent did not prefer pizza as their favorite?

Use the table link in #11 to answer this question.

What percent prefer pizza or cheeseburger as their favorite?

Use the table link in #11 to answer this question.

If there are 1170 students in the school, how many would you expect to choose potato chips as their favorite food?

Describe the trend in the scatter plot. Click on the Link to see it.

#21 Scatterplot

Describe the trend in the scatter plot. Click on the Link to see it.

#22 Scatterplot

Describe the trend in the scatter plot. Click on the Link to see it.

#23 Scatterplot

Describe the trend in the scatter plot. Click on the Link to see it.

#24 Scatterplot

Describe the trend in the scatter plot. Click on the Link to see it.

#25 Scatterplot

Graph the data table below in a scatterplot.
Each column represents a point on the scatter plot.
The x axis represents the number of books.
The y axis represents the weight of the books.

Data Table Link

Look at the scatterplot graph you made for question #26.
Describe the trend in your scatter plot

Identify the data set as having a positive, a negative, or no correlation.

#28 a person's height and the person's shoe size

Identify the data set as having a positive, a negative, or no correlation.

#29 the age of a child and the amount of weekly allowance that the child receives

Identify the data set as having a positive, a negative, or no correlation.

#30 the distance one lives from school and the length of the school day

Identify the data set as having a positive, a negative, or no correlation.

#31 the average number of hours a child sleeps and the age of the child

Carmella made a scatter plot comparing the daily temperature and the number of people at a beach. Click on the link below and look at the scatter plots. Which of the three scatterplots most likely represents the data? Choose A, B, or C.

Scatter Plot Link

Make a scatter plot of the data found in the link below. Answer question #34 to explain if there is a trend in your scatter plot.

Data Table

A university has 30,600 students. In a random sample of 240 students, 20 speak three or more languages. Predict the number of students at the university who speak three or more languages.
Type only the number in your answer.