A researcher wanted to know if there was a relationship between stress and frustration. The researcher recruited n = 5 participants and asked them to solve a difficult puzzle in a short time period....

A researcher wanted to know if there was a relationship between stress and frustration.  The researcher recruited n = 5 participants and asked them to solve a difficult puzzle in a short time period.  She then asked each participant to rate how stressful the task was and how frustrated they were to solve the puzzle on a scale of 1 to 5.  The data are below:

16. Calculate Pearson's r

17. The same researcher wants to know if the perception of stress (X) predicts a person's frustration level (Y) and wants to create a regression equation.

18. Calculate a (y-intercept)