Answer:
Step-by-step explanation:
Given the data:
Predicted value (X):
12.5
3.7
21.6
60.0
37.6
6.1
16.8
41.2
Sales (Y) :
148
55
338
994
541
89
126
379
Using a linear regression calculator to obtain the linear model for the predicted y values
Ypred = 15.23977X - 46.29181
_Y ____Ypred ___residual(Y - Ypred)
148 ___ 144.21 ______ 3.79
55 ____10.05 _______44.5
338 ___282.89______ 55.11
994 ___868.09______ 125.91
541 ____526.72 _____ 14.28
89 ____ 46.67 _______42.33
126 ____209.74 ______ −83.74
379____581.59 ______ - 202.59
