17 Jul The time series plot shown below describes actual quarterly sales for a department store over a 6-year period.
The time series plot shown below describes actual quarterly sales for a department store over a 6-year period.
- The forecaster decided that there is an exponential trend in the series. In order to fit a regression-based model that accounts for this trend, which of the following operations must be performed?
- Take a logarithm of the Quarter index
- Take a logarithm of sales
- Take an exponent of sales
- Take an exponent of Quarter index
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