1. Descriptive Statistics Univariate Data
Brain Genie Review and Extension of Univariate Data Analysis
12/9

2. Use the scatter plot and least-squares regression line to make 3 predictions about these variables. How many hours a week can we predict that a student with a 1.5 GPA is spending in office hours?

3. Use the scatter plot and least-squares regression line to make 3 predictions about these variables. How many hours a week can we predict that a student with a 3.0 GPA is spending in office hours?

4. Use the scatter plot and least-squares regression line to make 3 predictions about these variables. How many hours a week can we predict that a student with a 4.6 GPA is spending in office hours?

5. Which of these predictions is using interpolation
Which of these predictions is using interpolation? Which predictions are using extrapolation? WHY?
1.5
3.0
4.6

6. What population do you think it is reasonable to use the information above to make inferences about?

7. What observations can we make about the data above in terms of the correlation coefficient?

8. What is the least-squares linear regression equation for the data above? What can we use this to do? WHAT ARE THE LIMITATIONS OF THE LEAST-SQUARES LINEAR REGRESSION MODEL?

9. What is the maximum, minimum, and scale of the x-axis?
y-axis?

10. Brain Genie
Class Code: sul14vge