GER The residents of a housing development for senior citizens have completed a survey in which they indicated how physically active they are and how many visitors they receive each week. Are these two variables related for the 10 cases reported here? Draw a scattergram and compute r and r 2

. Find the least-squares regression line. What would be the predicted number of visitors for a person whose level of activity was a 5? How about a person who scored 18 on level of activity?

Case Level of Activity Number of Visitors A 10 14 B 11 12 C 12 10 D 10 9 E 15 8 F 9 7 G 7 10 H 3 15 I 10 12 J 9 2