# Question

Here’s a scatterplot of the % of income spent on food versus household income for respondents to the Cornell National Social Survey:

For each of the regression assumptions, state whether it is satisfied, not satisfied, or can’t be determined from this plot.

a) Linearity

b) Independence

c) Equal spread

d) Normal population

For each of the regression assumptions, state whether it is satisfied, not satisfied, or can’t be determined from this plot.

a) Linearity

b) Independence

c) Equal spread

d) Normal population

## Answer to relevant Questions

Here are data from a small bookstore. Number of Salespeople Working Sales (in $1000’s) 2 ............. 10 3 ............. 11 7 ............. 13 9 ............. 14 10 ............. 18 10 ...The manager of the concert production company considered in earlier exercises considers the regression of Total Revenue on Ticket Sales (Exercise) and computes the Durbin- Watson statistic, obtaining a value of 0.51. a) ...In justifying his choice of a model, a consultant says “I know this is the correct model because R2 = 99.4%.” a) Is this reasoning correct? Explain. b) Does this model allow the consultant to make accurate predictions? ...Each of the following scatterplots a– d shows a cluster of points and one “ stray” point. For each, answer questions 1– 4: 1) In what way is the point unusual? Does it have high le-verage, a large residual, or both? ...In Exercise we looked at the age at which women married as one of the variables considered by those selling wedding services. Another variable of concern is the difference in age of the two partners. The graph shows the ages ...Post your question

0