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# MTEL Mathematics (Elementary): Regression & Correlation 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!

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#### Question 1 1. What is the relationship between two sets of variables used to describe or predict information?

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Question 2
2.
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 3 3. What is a condition or piece of data in an experiment that can be controlled or changed?

#### Question 4 4. Which of the following problems could be studied through the use of regression analysis?

#### Question 5 5. What is the relationship between two variables or sets of data?

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#### Question 6 6. What is a graph of ordered pairs showing a relationship between two sets of data?

#### Question 7 7. What do we call a straight line that attempts to predict the relationship between two points?

#### Question 8 8. What do we call two sets of variables that can change and are compared to find relationships?

#### Question 9 9. A scientist finishes an experiment, and concludes that there is a causal link between the independent variable and the dependent variable. Why might they come to this conclusion?

#### Question 10 10. A scientist plots data points from an experiment, and notices that the dependent variables and the independent variables in the data set are decreasing together. What kind of correlation have they discovered, and why?

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#### Question 11 11. How are independent variables and dependent variables different?

#### Question 12 12. What is it called when dependent variables and independent variables in a data set either increase or decrease opposite from one another?

#### Question 13 13. What is a graph of ordered pairs showing a relationship between two sets of data?

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Question 14
14.
Find the regression line equation using the formulas for the following data set:

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

#### Question 15 15. What do we call two sets of variables that can change and are compared to find relationships?

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#### Question 16 16. A scientist is designing an experiment with rats, and designates weight as the dependent variable. Why might this be the case?

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

#### Question 18 18. 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 19 19. What is a condition or piece of data in an experiment that can be controlled or changed?

#### Question 20 20. 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?

#### MTEL Mathematics (Elementary): Regression & Correlation 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!