Given the data in Table below, compute the error measurements indicated.

a.Calculate Error, Error Squared, Absolute Error and Absolute Percentage Error. (2.5 marks each = 10 marks)

b. Calculate CFE, MSE, MAD and MAPE. (5 marks each = 20 marks)

Month	Demand	Forecast	Error	Error Squared	Absolute Error	Absolute Percentage Error
1	50	57
2	60	53
3	55	55
4	45	57
5	70	50
6	58	52
7	64	64
8	53	61
9	59	59
10	62	56