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Forecasted and actual sales are shown below. ? Week Forecast Actual 1 120 132 ? 2 590 661 ? 3 100 100 ? 4 700
Forecasted and actual sales are shown below. ? Week Forecast Actual 1 120 132 ? 2 590 661 ? 3 100 100 ? 4 700 658 ? Calculate the mean squared error
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