Question: show all work please Using the following data forecast using linear trend line where y= a+bx (You must calculate b (beta) and a (alpha) 1

show all work please

Using the following data forecast using linear trend line where y= a+bx (You must calculate b (beta) and a (alpha) 1 2 3 4 5 6 7 8 9 10 11 62.70 63.90 68.00 66.40 67.20 65.80 68.20 69.30 67.20 70.10 Create the forecast column, the error column in incremental terms, and then the error column in terms of absolute value. Calculate the MAD, then the MAPD

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