Question

Research was conducted on the amount of training for 5K and the time a contestant took to run the race. The researcher recorded the number of miles during training ( a 1 month period) and the time to complete the 5K. The results are below.

Miles Trained	80	98	28	90	67	87
Time(Minutes)	37.61	36.1	32.57	41.28	29.32	43.24

a) Give the correlation coefficient.
r =

b) Give the equation of regression line.

y = x +


c) Interpret the y-intercept



d)Predict the time in the 5K if someone trained 90 miles.
y =
e) Give the residual for 28 miles trained.
Residual=

Answer 1