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Unit 6 - Study Guide - 8.SP.2 & 8.SP.4

Posljednje ažuriranje 3 months ago

27

ME - 80% - 100%

AP - 60% - 79%

DM - 0% - 59%

1

Determine whether the following scenarios have a positive, negative or no association.

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Pitanje 1

1.

Mr. Gettleman created a website about the basketball team. He has a hit counter on his site that lets him know how many people have visited the site. He kept track of the number of hits the site received each day for the first two weeks.
The graph is a scatter plot for the collected data along with the regression line.
Make sure to use your LINE OF BEST FIT for answering this question!

Every day the number of hits increases by approximately 1

Every day the number of hits increases by approximately 5

Every 2 days the number of hits increases by approximately 1

Every 2 days the number of hits increases by approximately 5

Pitanje 2

2.

The amount of time someone spends on social media and the amount of homework they complete.

(a) positive

(b) negative

(c) no association

Pitanje 3

3.

The length of hair and the number of math problems you can do

(a) positive

(b) negative

(c) no association

The Ehrenberg family took a 15-day vacation to southern California and visited several popular theme parks during their trip.

The graph below shows the amount of money the Ehrenberg family had remaining at the end of each day of their trip.

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Pitanje 4

4.

Draw the line of best fit!

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Pitanje 6

6.

Write the PREDICTION FUNCTION.
Make sure to write it in y=mx+b form!

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Pitanje 7

7.

THIS QUESTION IS MANUALLY GRADED
Explain the slope.
USE THE VALUE OF THE SLOPE IN YOUR ANSWER

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1

Leo is testing a theory that says students who speak a foreign language are also strong mathematics students. He surveys the freshman class at Niles North and the results are shown below in an incomplete 2-way frequency table.

Complete the totals column and row and answer the questions below regarding this table.

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Pitanje 10

10.

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1

Ms. DiZillo conducted a class survey with the 8th graders from Class of 2025 and the Class of 2026.

Complete the table and answer the questions below regarding her findings.

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Pitanje 5

5.

Describe the association between the two variables.
Select all that apply

As the days increase, the amount of money remaining increases

As the days increase, the amount of money remaining decreases

As the amount of money remaining decreases, the days increase

Pitanje 8

8.

THIS QUESTION IS MANUALLY GRADED
Explain the y-intercept.
USE THE VALUE OF THE Y-INTERCEPT IN YOUR ANSWER

Pitanje 9

9.

Use your prediction function (#6) to predict how much money the Ehrenberg family will have at the end of the Day 18 if they extend the length of their trip.
Answer an amount like $50

Pitanje 11

11.

Pitanje 12

12.

Pitanje 13

13.

Pitanje 14

14.

Pitanje 15

15.

What percent of students with a math average GREATER than or equal to 90 DO NOT speak a foreign language?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.

Pitanje 16

16.

What percent of students with a math average NOT GREATER than or equal to 90 DO NOT speak a foreign language?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.

Pitanje 17

17.

Complete the table here first! Then answer #21-29

Pitanje 18

18.

Pitanje 19

19.

Pitanje 20

20.

Pitanje 21

21.

Pitanje 22

22.

Pitanje 23

23.

Pitanje 24

24.

What percent of 14 year olds walk to school?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.

Pitanje 25

25.

What percentage of 15 year olds walk to school?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.

Pitanje 26

26.

What percentage of students who ride a bike to school are 14 year olds?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.

Pitanje 27

27.

What percentage of 14 year olds ride their bike to school?
Enter a percentage like 70%. Round your answer to the nearest whole percentage.