The data file Quarterly Earnings shows quarterly earnings per share of a corporation over 7 years. a. Draw a time plot of these data. Does this graph suggest the presence of a strong seasonal...

The data file
Quarterly Earnings
shows quarterly earnings per share of a corporation over 7 years.

a. Draw a time plot of these data. Does this graph suggest the presence of a strong seasonal component?


b. Use the seasonal index method to obtain a seasonally adjusted series.




May 19, 2022
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