Oakland passengers, part 2.

In Exercise 29, we created a linear model describing the trend in the number of passengers departing from Oakland (CA) airport each month from 1997 to 2007. Here’s the residual plot, but with lines added to show the order of the values in time:

a) Can you account for the pattern shown here?

b) Would a re-expression help us deal with this pattern?
Explain.

Transcribed Image Text:

Residuals 125000 0 -125000 -250000 600000 800000 1000000 1200000 Predicted