Consider the following time series data.

Consider the following time series data.

Quarter Year 1 Year 2 Year 3
1 4 6 7
2 2 3 6
3 3 5 6
4 5 7 8
  1. Construct a time series plot. What type of pattern exists in the data?

    The time series plot indicates a linear trend and a seasonal pattern

  2. Show the four-quarter and centered moving average values for this time series.

     

  3. Compute seasonal indexes and adjusted seasonal indexes for the four quarters.

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