A statistics student is interested in the relationship
between the number of aunts and uncles a person has
and the number of cousins. She surveys a simple
random sample of 12 people and asks them how many
of each they have. She calculates the least-squares
regression line and finds the equation is ý = 2.6 +
1.64x, where y is the number of cousins and x is the
number of aunts and uncles. The residual plot is
shown.
Based on the residual plot, is the linear model
appropriate?
No, the residuals are relatively large.
No, there is a clear pattern in the residual plot.
Yes, there is no clear pattern in the residual plot.
Yes, about half of the residuals are positive and half
are negative.