A sample of 10 households was monitored for one year energy consumed (1010 joules) were determined. The results follow.

a. Compute the least-squares regression line for predicting energy consumption from income.
b. Construct a residual plot. Verify that a linear model is appropriate.
c. If two families differ in income by $12.000. by how much would you predict their energy consumptions to differ?
d. Predict the energy consumption for a family whose income is $50.000.

Transcribed Image Text:

Income 31 40 28 48 195 96 70 100 145 78 Energy 16 40 30 46 185 98 94 77 5 67