34 Part 2 35 Year 36 37 38 last year Quarter I Demand 36 40 39 40 this year 39 36 36 47 43 28 41 EEEEEEEEEEE - 42 next year 45 46 47 48 49 50 51 52 Q3. (Use "Data Analysis" on Excel if you want to save your time.) Find the value of a and b for Regression Model, Y-a+bx Generate the forecasts for cach of 4 quarters for the next year using Regression Model 53 04. 55 56 OS Compute MAD, MSE, and RMSE, 58 34 Part 2 35 Year 36 37 38 last year Quarter I Demand 36 40 39 40 this year 39 36 36 47 43 28 41 EEEEEEEEEEE - 42 next year 45 46 47 48 49 50 51 52 Q3. (Use "Data Analysis" on Excel if you want to save your time.) Find the value of a and b for Regression Model, Y-a+bx Generate the forecasts for cach of 4 quarters for the next year using Regression Model 53 04. 55 56 OS Compute MAD, MSE, and RMSE, 58