# Using Scatter Plots Chapter Exam

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

### Page 1

#### Question 1 1. What is the comparison of two values, usually x and y, and the consistent change between those values?

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Question 2
2.
For the following equation, identify the slope, the intercept, and interpret the meaning of each for the scenario.

y= 3x + 25

Jay just got his water bill. He has to pay an initial fee for the service, plus an amount per gallon that he uses.

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Question 3
3.
For the following equation, identify the slope, the intercept, and interpret the meaning of each for the scenario.

y = -4x + 7

For every incorrect answer, Stacia loses points. She gets points for writing her name on her paper.

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Question 4
4.
For the following equation, identify the slope, the intercept, and interpret the meaning of each for the scenario.

y= 7.5x - 3

James just got a new job. He will make a certain amount of money per hour, but he will also receive a one-time deduction to pay for his new uniform.

#### Question 5 5. How does a regression line show the relationship between two points?

### Page 2

#### Question 6 6. What do we call two sets of variables that can change and are compared to find relationships?

#### Question 7 7. What is a graph of ordered pairs showing a relationship between two sets of data?

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Question 8
8.
Use a ruler or a graphing calculator to find the regression line of the following data set:

(2, 3) (4, 6) (5, 1) (2, 4) (1, 3) (6, 3)

#### Question 9 9. What is a straight line that attempts to predict the relationship between two points, also known as a trend line or line of best fit?

#### Question 10 10. What is the relationship between two sets of variables used to describe or predict information?

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#### Question 11 11. A _____ attempts to predict the relationship between two points.

#### Question 12 12. A(n) _____ is a comparison of two values, usually x and y, and the consistent change between those values.

#### Question 13 13. What is the slope intercept formula?

#### Question 14 14. The _____ refers to the consistent change between x and y in a formula.

#### Question 15 15. In the equation y = 4x +15, what does 15 represent?

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Question 16
16.
Find the regression line equation using the formulas for the following data set:

(1, 3) (2, 4) (3, 5)

#### Question 17 17. What is the relationship between two sets of variables used to describe or predict information?

#### Question 18 18. Which of the following problems could be studied through the use of regression analysis?

#### Question 19 19. What do we call a prediction where a variable (y) is dependent on a second variable (x) based on the regression equation of a given set of data?

#### Question 20 20. What do we call a straight line that attempts to predict the relationship between two points?

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#### Question 21 21. How are independent variables and dependent variables different?

#### Question 22 22. What do we call two sets of variables that can change and are compared to find relationships?

#### Question 23 23. What is the relationship between two variables or sets of data?

#### Question 24 24. What is a graph of ordered pairs showing a relationship between two sets of data?

#### Question 25 25. What is a condition or piece of data in an experiment that can be controlled or changed?

#### Using Scatter Plots Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!