The quarterly sales levels (measured in millions of dollars) for Goodyear Tires are shown in the Table.
Fantastic news! We've Found the answer you've been seeking!
Question:
The quarterly sales levels (measured in millions of dollars) for Goodyear Tires are shown in the Table.
- Does there appear to be a significant seasonal effect in these sales levels? Plot the time series.
- Perform the decomposition analysis using multiplicative & additive models.
- Analyze this time series to get the four seasonal Indexes and interpret the indexes and determine the extent of the seasonal component in Goodyear's sales?
- Forecast sales for the four quarters of 2007 for each model and compare the result & comment on them.
Show all Minitab Output
Related Book For
Posted Date: