The following table contains the values of the average annual salary in thousands of dollars (...

 

Transcribed Image Text:

The following table contains the values of the average annual salary in thousands of dollars ( ) and the food expenses percentage ( y ) in seven regions of a country. * 45.1 59.0 57.2 61.8 58.8 47.2 55.2 y 68.8 61.2 59.9 56.7 55.0 54.3 49.3 (a) What proportion of the total variability in the food expenses percentage is accounted for by the simple linear regression model? Round your answer to one decimal place (e.g. 98.7). R2 = (b) Prepare a normal probability plot of the residuals from the least squares model. Does the normality assumption seem to be satisfied? There major departure from the normality assumption. The following table contains the values of the average annual salary in thousands of dollars ( ) and the food expenses percentage ( y ) in seven regions of a country. * 45.1 59.0 57.2 61.8 58.8 47.2 55.2 y 68.8 61.2 59.9 56.7 55.0 54.3 49.3 (a) What proportion of the total variability in the food expenses percentage is accounted for by the simple linear regression model? Round your answer to one decimal place (e.g. 98.7). R2 = (b) Prepare a normal probability plot of the residuals from the least squares model. Does the normality assumption seem to be satisfied? There major departure from the normality assumption.

Answer rating: 100% (QA)

o cance of megression by teoting f the slope megrmes s... View the full answer