Author Question: For families who live in apartments the correlation between the family's income and the amount of ... (Read 109 times)

sjones · **on:** Jul 25, 2018

For families who live in apartments the correlation between the family's income and the amount of rent they pay is r = 0.60. Which is true?

I. In general, families with higher incomes pay more in rent.
II. On average, families spend 60 of their income on rent.
III. The regression line passes through 60 of the (income, rent) data points.
A) I, II, and III B) I only C) I and III only D) I and II only E) II only

Question 2

A lakeside restaurant found the correlation between the daily temperature and the number of meals they served to be 0.40.

On a day when the temperature is two standard deviations above the mean, the number of meals they should plan on serving is _?_ the mean.
A) 0.16 SD above
B) equal to
C) 0.8 SD above
D) 2.0 SD above
E) 0.4 SD above