Question: Using QM how would you calculate (a) MAD, (b) MSE, and (c) MAPE for the following forecast versus actual sales figures (for peer post credit.)

Using QM how would you calculate (a) MAD, (b) MSE, and (c) MAPE for the following forecast versus actual sales figures (for peer post credit.) (Please round to four decimal places for MAPE.) Copy/paste your QM results/answer directly in your post.

Forecast Actual
100 102
110 107
120 124
134 128

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