## Answers

9tuolel Unit sold 3 month IMA error Squareet error 1. g 2 alw 3 4 6 ( O onolo S 12 S 7 49 6 9 8 (ازن) 7 (1)

a) Forecast = 9+3+6 3 18 3 b) (i) Forecast - g 6+12+g 3 27 3 c) (iii) Error - Forecast value Actual value 9 - 8 Error 2 d) (iv) Squared Squared error = (Error) (1)? e) Mean Square error cm7SE) It is mean of squared error MSE = O +49 +1 .. 3 So 3 = 16.67

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