Chapter 14.9, Problem 51E

Consider the following data for two variables, x and y.

xi	4	5	7	8	10	12	12	22
yi	12	14	16	15	18	20	24	19

1. a. Compute the standardized residuals for these data. Do the data include any outliers? Explain.
2. b. Compute the leverage values for these data. Do there appear to be any influential observations in these data? Explain.
3. c. Develop a scatter diagram for these data. Does the scatter diagram indicate any influential observations? Explain.