Question: Airline passengers revisited. In Chapter 9, Exercise 9, we created a linear model describing the trend in the number of passengers departing from Oakland (CA)

Airline passengers revisited. In Chapter 9, Exercise 9, we created a linear model describing the trend in the number of passengers departing from Oakland (CA)

airport each month since the start of 1997. 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

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