Unit 9 Statistics Retake

5

Determine whether each sample is a random sample or a biased sample.
People attending a football game were asked what their favorite sport was.

Random Sample

Biased Sample

5

Determine whether each sample is a random sample or a biased sample.
All 2nd period students were asked where they want to go to college.

Random Sample

Biased sample

5

Find the mode of the set of numbers. 63, 79, 44, 90, 79

5

Find the median of the set of numbers.
16, 26, 18, 23, 10, 19, 28

26

19

23

17

5

Calculate the mean for : 65, 65, 81, 75, 90, 95

78.5

72

65

471

5

Halls High School has a student population of 3020. In a sample of 250 students, 170 of there were female athletes. How many students in the entire population should be female athletes?

170

2054

2700

320

5

Ana wants to know the average student's opinion of the dress code policy at her school. Which group of students should she survey in order to achieve the most accurate results?

thirty students who were in trouble for dress code

thirty of her friends

thirty randomly selected students from her school

thirty students who have never been in trouble for dress code

5

A

B

C

D

MGSE7.SP.4

5

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.
What is the mean score?

5

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.
What is the mode of the data?

The height of students in Mrs. Kinsey's class is: 64, 60, 55, 56, 62, 63, 58, 62

5

What is the MEAN?

61

480

60

55

5

What is the MEDIAN?

59

61

60

9

5

What is the MODE?

9

60

55

62

5

What is the RANGE?

9

60

55

62

5

The mean is also know as what other word:

median

average

mode

Ɛhia

5

A coach wants to know the average number of hours students at the school sleep each night. Which method is most likely to produce an unbiased sample?

Survey 30 students who say they are tired often.

Survey only students on the basketball team.

Randomly select 30 students from the school roster and survey them.

Survey the first 30 students who arrive at school.

Ɛhia

5

A student claims, “Most students at our school spend more than 3 hours on homework each night.” Which statistic would best help you evaluate this claim using data from a sample?

The range of homework hours in the sample

The percentage of students in the sample who spend more than 3 hours on homework

The median number of hours of homework in the sample

The mean number of hours of homework in the sample

Ɛhia

5

A town newspaper asks readers to vote online about whether the city should build a new park. Which statement best describes the results?

The results are unbiased because the newspaper reaches the whole town.

The results are random because anyone can vote online.

The results are unbiased if a lot of people vote.

The results are likely biased because only people who choose to respond are counted.

Ɛhia

5

A researcher wants to estimate the proportion of students who eat breakfast every day. Which sample is most likely to be representative of the entire school?

A random sample of 50 students from all grade levels

50 students who play sports after school

50 students from one homeroom class

50 students from the cafeteria at breakfast time

Ɛhia

5

A student wants to predict the favorite lunch of all 7th graders. She surveys 25 students from her 1st period class and finds that 60% prefer pizza. Which conclusion is most reasonable?

The sample may be biased, so the result may not represent all 7th graders.

Exactly 60% of all 7th graders prefer pizza.

The result is unbiased because it uses a percentage.

The result is unbiased because it includes 25 students.

Unit 9 Statistics Retake

Determine whether each sample is a random sample or a biased sample. People attending a football game were asked what their favorite sport was.

Determine whether each sample is a random sample or a biased sample. All 2nd period students were asked where they want to go to college.

Find the mode of the set of numbers. 63, 79, 44, 90, 79

Find the median of the set of numbers. 16, 26, 18, 23, 10, 19, 28

Calculate the mean for : 65, 65, 81, 75, 90, 95

Halls High School has a student population of 3020. In a sample of 250 students, 170 of there were female athletes. How many students in the entire population should be female athletes?

Ana wants to know the average student's opinion of the dress code policy at her school. Which group of students should she survey in order to achieve the most accurate results?

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.What is the mean score?

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.What is the mode of the data?

What is the MEAN?

What is the MEDIAN?

What is the MODE?

What is the RANGE?

The mean is also know as what other word:

A coach wants to know the average number of hours students at the school sleep each night. Which method is most likely to produce an unbiased sample?

A student claims, “Most students at our school spend more than 3 hours on homework each night.” Which statistic would best help you evaluate this claim using data from a sample?

A town newspaper asks readers to vote online about whether the city should build a new park. Which statement best describes the results?

A researcher wants to estimate the proportion of students who eat breakfast every day. Which sample is most likely to be representative of the entire school?

A student wants to predict the favorite lunch of all 7th graders. She surveys 25 students from her 1st period class and finds that 60% prefer pizza. Which conclusion is most reasonable?

Determine whether each sample is a random sample or a biased sample. People attending a football game were asked what their favorite sport was.

Determine whether each sample is a random sample or a biased sample. All 2nd period students were asked where they want to go to college.

Find the mode of the set of numbers. 63, 79, 44, 90, 79

Find the median of the set of numbers. 16, 26, 18, 23, 10, 19, 28

Calculate the mean for : 65, 65, 81, 75, 90, 95

Halls High School has a student population of 3020. In a sample of 250 students, 170 of there were female athletes. How many students in the entire population should be female athletes?

Ana wants to know the average student's opinion of the dress code policy at her school. Which group of students should she survey in order to achieve the most accurate results?

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.What is the mean score?

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.What is the mode of the data?

What is the MEAN?

What is the MEDIAN?

What is the MODE?

What is the RANGE?

The mean is also know as what other word:

A coach wants to know the average number of hours students at the school sleep each night. Which method is most likely to produce an unbiased sample?

A student claims, “Most students at our school spend more than 3 hours on homework each night.” Which statistic would best help you evaluate this claim using data from a sample?

A town newspaper asks readers to vote online about whether the city should build a new park. Which statement best describes the results?

A researcher wants to estimate the proportion of students who eat breakfast every day. Which sample is most likely to be representative of the entire school?

A student wants to predict the favorite lunch of all 7th graders. She surveys 25 students from her 1st period class and finds that 60% prefer pizza. Which conclusion is most reasonable?

Determine whether each sample is a random sample or a biased sample.
People attending a football game were asked what their favorite sport was.

Determine whether each sample is a random sample or a biased sample.
All 2nd period students were asked where they want to go to college.

Find the median of the set of numbers.
16, 26, 18, 23, 10, 19, 28

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.
What is the mean score?

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.
What is the mode of the data?

Determine whether each sample is a random sample or a biased sample.
People attending a football game were asked what their favorite sport was.

Determine whether each sample is a random sample or a biased sample.
All 2nd period students were asked where they want to go to college.

Find the median of the set of numbers.
16, 26, 18, 23, 10, 19, 28

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.
What is the mean score?

Michael has taken 6 quizzes so far in his Algebra 1 class. Michael’s scores are the following: 100, 80, 90, 70, 20, and 90.
What is the mode of the data?