Zara wants to know how teachers in the local school district feel about extending the school day to 30 minutes longer. Which method will produce a representative sample and therefore provide valid inference?

Survey a random sample of 30 teachers within the school district.

Survey all the teachers who have publicly protested or supported the proposal.

Survey the first 30 teachers who arrive at Zara's school in the morning.

Survey a random sample of 30 teachers and parents of kids within the district.

You want to estimate the number of students in a high school who ride the school bus. Which sample is best?

100 students at random during lunch

All students in the marching band

I survey a senior citizen center to gain information about the population of NE Oklahoma. Which of the following best describes my population sample?

Biased, sample is not randomly taken or representative of population.

Biased, sample is randomly taken or representative of population.

Representative, sample is randomly taken & representative of population.

Representative, sample is not randomly taken or biased in terms the of population.

Yolanda wants to survey the 7th grade students at her school to learn their opinions about STEM activity days. Which of the following sampling methods is most likely to create a random sample that is representative of the population of 7th grade students at her school?

Placing the ID numbers of 7th graders in a bag and drawing 15 numbers without looking.

Choosing every 5th student who enters the gym during PE

Asking the 7th grade students to volunteer for the survey

Selecting the first 4 boys and first 4 girls in an alphabetized list of each 7th grade science class period

What might a scatter plot be used for in real life?

To analyze the relationship between height and shoe size.

To determine the best type of pet.

To choose a color for painting a room.

To decide what to have for lunch.

What question would lead to data that would best be represented by a scatterplot?

Is more ice cream sold on days it is hotter?

Is a student's favorite class related to the grade they received on their last test?

What sports have the lowest amount of points scored?

What is the average attendance at school each day?

What question would lead to data that would best be represented by a scatterplot?

Does the age of a runner affect their speed?

Which months have the hottest temperatures?

What was the total snowfall in January last year?

Does a students favorite color impact the color car they drive?

What is one reason to use a scatter plot?

To predict the outcome of one variable based on another.

To show how variables are unrelated.

To show data in alphabetical order.

To count the number of data points.

What can you analyze from a scatter plot?

The relationship between two variables.

The favorite color of most people.

The number of pets each person has.

Scatter Plots Review: 20-Question Practice Test

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month. Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles?

A. 50 min

B. 80 min

C. 45 min

D. 63 min

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

65

92

70

76

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

If the debate team plans to practice for 6 hours, how many debates should they win?

20

16

24

28

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Based on the graph, if Joe earned $800, how many hours did he work?

45 hours

60 hours

30 hours

15 hours

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Based on the graph, if Joe earned $400, how many hours did he work?

25 hours

35 hours

45 hours

15 hours

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

If Gold's Gym is looking to buy 30 TVs, how much will each one cost?

400

750

1250

0

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

If Gold's Gym is looking to buy 10 TVs, how much will each one cost?

400

750

1250

1000

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Scatter Plots Review

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month. Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles?

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

If the debate team plans to practice for 6 hours, how many debates should they win?

Based on the graph, if Joe earned $800, how many hours did he work?

Based on the graph, if Joe earned $400, how many hours did he work?

If Gold's Gym is looking to buy 30 TVs, how much will each one cost?

If Gold's Gym is looking to buy 10 TVs, how much will each one cost?

Zara wants to know how teachers in the local school district feel about extending the school day to 30 minutes longer. Which method will produce a representative sample and therefore provide valid inference?

You want to estimate the number of students in a high school who ride the school bus. Which sample is best?

_______ is a part of a group being surveyed.

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