Attempt #3--2/7/2023---HW-Test Review-Unit 1 Collecting Data

Last updated almost 3 years ago

34 questions

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Attempt #3--2/7/2023---HW-Test Review-Unit 1 Collecting Data

Last updated almost 3 years ago

34 questions

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Describe a sample.

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Describe a population.

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Using the definitions of sample and population, describe how they relate to each other.

A study of of 2000 students was conducted to determine if drinking 64 ounces of water daily would improve their attention during class.

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USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Dave conducted two different surveys about student engagment in school.  For Survey A, he stood at the entrance of the library prior to lunch and surveyed the first 20 students.  For Survey B, he used a random number generator to select 20 students in the school to survey.

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0

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USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

A high school guidance counselor wants to know what percentage of students have tried marijuana (in any form). He sends out an email to 350 randomly chosen students and asks them if they have tried marijuana.  Of the 123 that responded, 4% said that they tried marijuana.

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1

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Determine whether the following statement is about qualitative or quantitative data:

The man weighs 195 lbs.

Qualitative (Categorical)

Quantitative

Determine whether the following statement is about qualitative or quantitative data:

My social security number is 123-45-6789.

Qualitative (Categorical)

Quantitative

Four hundred mice were collected in Virginia Beach. The 400 mice would represent a

Sample

Population

Statistic

Parameter

The weights of all of the students at Virginia Tech were collected. These students would represent a

Population

Statistic

Parameter

Sample

Mrs. Boyd want to find out how many of her students enjoyed Geometry in the past 5 years. Which choice best represents a sample that would give accurate data?

A selection of random students by using a random number generator.

All of more than 1000 students to whom she has taught Geometry.

A selection of students who got an A in the class.

Go to the library during lunch and find former students to survey.

A record label wanted to see if people in New Hampshire liked their new logo. Which choice best represents a population?

A selection of people from different cities in New Hampshire.

4,000 retired adults 65 and older.

A selection of logo artists.

Every person in New Hampshire.

To get an idea of student's plans after high school, 60 members of each of the 4 classes (freshmen, sophomores, juniors and seniors) were surveyed. This is an example of a

Students entering the parking lot are questioned to determine whether they enjoy driving to school. This is an example of a

The principal chose 1 class from each department in the school and surveyed every student in each class about their favorite season. This is an example of a

Identify the sampling technique. A study on attitudes about smoking in the US is conducted. A reseacher randomly selects 500 people under the age of 40 and 500 people over the age of 40 to conduct the sample.

Identify the sampling technique. An owner of an electronics store assigns a number to each former shopper and then uses a computer to randomly generate ten numbers. The owner contacts the shoppers that corresponding to these numbers to get their opinion on their shopping experience.

Identify the sampling technique. To determine the number of students who brought their lunch to school, a researcher stops every 4th student as they enter the building to check if they brought a lunch.

Ms. Page, a dance teacher, wants to know if students would go to an after-school dance. According to simple random sampling principles, which of these is the best method to survey students about the dance?

Ask 50 random girls in the school if they would attend.

Ask 50 random students who attended the last dance.

Ask 50 random students in the school if they would attend.

Ask 50 random students from Ms. Page's dance classes if they would attend.

Ways of generating random samples include:

starting with the 1st car, then picking every 5th one.

drawing slips of paper from a hat.

choosing your friends to participate.

In order to understand opinions on the Super Bowl halftime show, Noah opens a residential telephone book and calls 150 people. This is an example of

undercoverage bias

nonresponse bias

voluntary response bias

response bias

5000 emails were sent to former Ocean Lakes Students to determine their opinion on their school experience. 450 students responded to the survey. This is an example of

response bias

voluntary response bias

undercoverage bias

nonresponse bias

Students were surveyed about whether or not they drink alcohol on the weekend. They were required to provide their student id number on the survey. This is an example of possible

response bias

voluntary response bias

undercoverage bias

nonresponse bias

Describe a sample.

Describe a population.

Using the definitions of sample and population, describe how they relate to each other.

A study of of 2000 students was conducted to determine if drinking 64 ounces of water daily would improve their attention during class.

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1

What is the explanatory variable?

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What is the response variable?

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What are the experimental units?

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1

What is a possible confounding variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

A random sample of 3200 students is taken from a large school district to determine if performing meditation will reduce anxiety.  The students are separated into groups by gender and then the students are given a 30 minute lesson on meditation.  Students were requried to track the number of hours per week that they performed meditation for 10 weeks.  The study found that those who meditated more than 3 hours per week lowered their anxiety levels.

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1

What is the exploratory variable?

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What is the reponse variable?

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1

What are the experimental units?

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1

What is a possible confounding variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Dave conducted two different surveys about student engagment in school.  For Survey A, he stood at the entrance of the library prior to lunch and surveyed the first 20 students.  For Survey B, he used a random number generator to select 20 students in the school to survey.

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0

Describe the sampling technique in survey A.

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1

Describe the sampling technique in survey B.

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1

Identify which survey Juan should have more confidence in and explain why.

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

A high school guidance counselor wants to know what percentage of students have tried marijuana (in any form). He sends out an email to 350 randomly chosen students and asks them if they have tried marijuana.  Of the 123 that responded, 4% said that they tried marijuana.

Required

1

Describe how NONRESPONSE bias might lead to bias in this survey.

Required

1

Describe how RESPONSE bias might lead to bias in this survey.

1

Is the sample proportion of 4% likely greater than or less than the actual proportion of the students at the school who have tired alcohol? Explain your answer.

Determine whether the following statement is about qualitative or quantitative data:  

The man weighs 195 lbs.

Qualitative (Categorical)

Quantitative

Determine whether the following statement is about qualitative or quantitative data:

My social security number is 123-45-6789.

Qualitative (Categorical)

Quantitative

Four hundred mice were collected in Virginia Beach.  The 400 mice would represent a

Sample

Population

Statistic

Parameter

The weights of all of the students at Virginia Tech were collected.  These students would represent a

Population

Statistic

Parameter

Sample

Mrs. Boyd want to find out how many of her students enjoyed Geometry in the past 5 years.  Which choice best represents a sample that would give accurate data?

A selection of random students by using a random number generator.

All of more than 1000 students to whom she has taught Geometry.

A selection of students who got an A in the class.

Go to the library during lunch and find former students to survey.

A record label wanted to see if people in New Hampshire liked their new logo.  Which choice best represents a population?

A selection of people from different cities in New Hampshire.

4,000 retired adults 65 and older.

A selection of logo artists.

Every person in New Hampshire.

To get an idea of student's plans after high school, 60 members of each of the 4 classes (freshmen, sophomores, juniors and seniors) were surveyed.  This is an example of a

Simple Random Sample

Cluster Sample

Stratified Sample

Systematic Sample

Convenience Sample

Students entering the parking lot are questioned to determine whether they enjoy driving to school.  This is an example of a

Simple Random Sample

Systematic Sample

Stratified Sample

Convenience Sample

Cluster Sample

The principal chose 1 class from each department in the school and surveyed every student in each class about their favorite season.  This is an example of a

Convenience Sample

Simple Random Sample

Cluster Sample

Systematic Sample

Stratified Sample

Identify the sampling technique.  A study on attitudes about smoking in the US is conducted.  A reseacher randomly selects 500 people under the age of 40 and 500 people over the age of 40 to conduct the sample.  

Cluster Sample

Stratified Sample

Systematic Sample

Convenience Sample

Simple Random Sample

Identify the sampling technique.  An owner of an electronics store assigns a number to each former shopper and then uses a computer to randomly generate ten numbers.  The owner contacts the shoppers that corresponding to these numbers to get their opinion on their shopping experience.

Simple Random Sample

Stratified Sample

Systematic Sample

Convenience Sample

Cluster Sample

Identify the sampling technique.  To determine the number of students who brought their lunch to school, a researcher stops every 4th student as they enter the building to check if they brought a lunch.

Systematic Sample

Stratified Sample

Convenience Sample

Simple Random Sample

Cluster Sample

Ms. Page, a dance teacher, wants to know if students would go to an after-school dance.  According to simple random sampling principles, which of these is the best method to survey students about the dance?

Ask 50 random girls in the school if they would attend.

Ask 50 random students who attended the last dance.

Ask 50 random students in the school if they would attend.

Ask 50 random students from Ms. Page's dance classes if they would attend.

Ways of generating random samples include:

starting with the 1st car, then picking every 5th one.

drawing slips of paper from a hat.

choosing your friends to participate.

In order to understand opinions on the Super Bowl halftime show, Noah opens a residential telephone book and calls 150 people.  This is an example of

undercoverage bias

nonresponse bias

voluntary response bias

response bias

5000 emails were sent to former Ocean Lakes Students to determine their opinion on their school experience.  450 students responded to the survey.  This is an example of

response bias

voluntary response bias

undercoverage bias

nonresponse bias

Students were surveyed about whether or not they drink alcohol on the weekend.  They were required to provide their student id number on the survey.  This is an example of possible

response bias

voluntary response bias

undercoverage bias

nonresponse bias

What is the explanatory variable?

What is the response variable?

What are the experimental units?

What is a possible confounding variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

A random sample of 3200 students is taken from a large school district to determine if performing meditation will reduce anxiety.  The students are separated into groups by gender and then the students are given a 30 minute lesson on meditation.  Students were requried to track the number of hours per week that they performed meditation for 10 weeks.  The study found that those who meditated more than 3 hours per week lowered their anxiety levels.

What is the exploratory variable?

What is the reponse variable?

What are the experimental units?

What is a possible confounding variable?

Describe the sampling technique in survey A.

Describe the sampling technique in survey B.

Identify which survey Juan should have more confidence in and explain why.

Describe how NONRESPONSE bias might lead to bias in this survey.

Describe how RESPONSE bias might lead to bias in this survey.

Is the sample proportion of 4% likely greater than or less than the actual proportion of the students at the school who have tired alcohol? Explain your answer.

Attempt #3--2/7/2023---HW-Test Review-Unit 1 Collecting Data

Attempt #3--2/7/2023---HW-Test Review-Unit 1 Collecting Data

Describe a sample.

Describe a population.

Using the definitions of sample and population, describe how they relate to each other.

A study of of 2000 students was conducted to determine if drinking 64 ounces of water daily would improve their attention during class.

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Determine whether the following statement is about qualitative or quantitative data: The man weighs 195 lbs.

Determine whether the following statement is about qualitative or quantitative data:My social security number is 123-45-6789.

Four hundred mice were collected in Virginia Beach. The 400 mice would represent a

The weights of all of the students at Virginia Tech were collected. These students would represent a

Mrs. Boyd want to find out how many of her students enjoyed Geometry in the past 5 years. Which choice best represents a sample that would give accurate data?

A record label wanted to see if people in New Hampshire liked their new logo. Which choice best represents a population?

To get an idea of student's plans after high school, 60 members of each of the 4 classes (freshmen, sophomores, juniors and seniors) were surveyed. This is an example of a

Students entering the parking lot are questioned to determine whether they enjoy driving to school. This is an example of a

The principal chose 1 class from each department in the school and surveyed every student in each class about their favorite season. This is an example of a

Identify the sampling technique. A study on attitudes about smoking in the US is conducted. A reseacher randomly selects 500 people under the age of 40 and 500 people over the age of 40 to conduct the sample.

Identify the sampling technique. An owner of an electronics store assigns a number to each former shopper and then uses a computer to randomly generate ten numbers. The owner contacts the shoppers that corresponding to these numbers to get their opinion on their shopping experience.

Identify the sampling technique. To determine the number of students who brought their lunch to school, a researcher stops every 4th student as they enter the building to check if they brought a lunch.

Ms. Page, a dance teacher, wants to know if students would go to an after-school dance. According to simple random sampling principles, which of these is the best method to survey students about the dance?

Ways of generating random samples include:

In order to understand opinions on the Super Bowl halftime show, Noah opens a residential telephone book and calls 150 people. This is an example of

5000 emails were sent to former Ocean Lakes Students to determine their opinion on their school experience. 450 students responded to the survey. This is an example of

Students were surveyed about whether or not they drink alcohol on the weekend. They were required to provide their student id number on the survey. This is an example of possible

Describe a sample.

Describe a population.

Using the definitions of sample and population, describe how they relate to each other.

A study of of 2000 students was conducted to determine if drinking 64 ounces of water daily would improve their attention during class.

What is the explanatory variable?

What is the response variable?

What are the experimental units?

What is a possible confounding variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

What is the exploratory variable?

What is the reponse variable?

What are the experimental units?

What is a possible confounding variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Describe the sampling technique in survey A.

Describe the sampling technique in survey B.

Identify which survey Juan should have more confidence in and explain why.

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

Describe how NONRESPONSE bias might lead to bias in this survey.

Describe how RESPONSE bias might lead to bias in this survey.

Is the sample proportion of 4% likely greater than or less than the actual proportion of the students at the school who have tired alcohol? Explain your answer.

What is the explanatory variable?

What is the response variable?

What are the experimental units?

What is a possible confounding variable?

USE THE FOLLOWING INFORMATION TO ANSWER THE QUESTIONS ON THE RIGHT:

What is the exploratory variable?

What is the reponse variable?

What are the experimental units?

What is a possible confounding variable?

Describe the sampling technique in survey A.

Describe the sampling technique in survey B.

Identify which survey Juan should have more confidence in and explain why.

Describe how NONRESPONSE bias might lead to bias in this survey.

Describe how RESPONSE bias might lead to bias in this survey.

Is the sample proportion of 4% likely greater than or less than the actual proportion of the students at the school who have tired alcohol? Explain your answer.

Determine whether the following statement is about qualitative or quantitative data:

The man weighs 195 lbs.

Determine whether the following statement is about qualitative or quantitative data:

My social security number is 123-45-6789.