$2.$ ABC Inc is exploring two different forecasting methods. Below are the forecasts from each of

the methods as well as the actuals.

Month Actual

sales

Method

A

Method

B

January $10\mathrm{.}513\mathrm{.}5$

$12$

February $1515\mathrm{.}75$

$18$

March

$1514\mathrm{.}25$

$13\mathrm{.}5$

April $1518$

$16\mathrm{.}65$

a$)$ Evaluate the results of both methods using MAD $(2$ points$)$

b$)$ Evaluate the results of both methods using MSE $(2$ points$)$

c$)$ Evaluate the results of both methods using MAPE $(2$ points$)$

d$)$ Which method do you recommend? $(1$ point$)$