Question Help

A data set is given below.

(a) Draw a scatter diagram. Comment on the type of relation that appears to exist between x and y.

(b) Given that x overbar

xequals

=3.6667

3.6667, s Subscript x

sxequals

=2.3381

2.3381, y overbar

yequals

=4.4167

4.4167, s Subscript y

syequals

=1.6987

1.6987, and requals

=negative 0.9450

0.9450, determine theleast-squares regression line.

(c) Graph theleast-squares regression line on the scatter diagram drawn in part(a).