Exam 10: Correlation and Regression

Use the given data to find the best predicted value of the response variable. -Four pairs of data yield $\mathrm { r } = 0.942$ and the regression equation $\hat { y } = 3 x$ . Also, $\bar { y } = 12.75$ . What is the best predicted value of $y$ for $x = 5.8$ ?

Given: There is no significant linear correlation between scores on a math test and scores on a verbal test. Conclusion: There is no relationship between scores on the math test and scores on the verbal test.

Construct a scatterplot for the given data - 15 -14 -18 9 -20 -11 -96 25 45 -42 92 5

The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87