Question: Apply at least two methods (the MA, WMA, EXP, Holts, and Holt-Winters methods) to fit each SKU sales data up to Week 40 of 2017.

Apply at least two methods (the MA, WMA, EXP, Holts, and Holt-Winters methods) to fit each SKU sales data up to Week 40 of 2017. Use the Root Mean Square Error (RMSE) as the measure of accuracy.

For the EXP, Holts and Holt-Winters methods, use Excel Solver to find the best parameter values with respect to the RMSE.

Compare RMSEs and choose the best model. Use the best model to generate sales forecasts in Weeks 41 to 44 of 2017.

Apply at least two methods (the MA, WMA, EXP,

2017W41 95% Lower 2017W42 95% Lower 2017W 43 95% Lower 2017W44 95% Lower Forecast 95% Upper Forecast 95% Upper Forecast 95% Upper Forecast 95% Upper SKU 41943 1A191 1A134 41980 41978 22017 42016 41942 420AA 41995 41994 40827 42044 42022 41992 41943 42020 44336 4433A 44338 41972 42009 41941 3732A 41940 1A194 42048 42010 42023 42010 41983 41962 42032 42043 4993A 42031 42019 4202A 42012 42042 37325 42000 2A110 41997 41948 4197 41973 41959 44874 2A201 1A142 1A0A9 42033 41949 A2019 A2011 42005 A2012 A2010 A2014 28 30 28 30 31 32 33 34 35 3546 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 36 295 420AA 296 420AA 297 420AA 298 420AA 299 420AA 300 420AA 301 420AA 302 420AA 303 420AA 304 420AA 305 420AA 1 41979 2 41979 3 41979 4 41979 5 41979 2017 2017 2017 2017 2017 2017 2017 2017 2017 2017 2017 2012 2012 2012 2012 2012 6 2 6 6 5 9 6 7 3 5 27 27 31 48 36 37 32 30 NA NA NA NA NA 37 38 39 40 1 NA 2 NA 3 NA 4 NA 5 NA 5 2017W41 95% Lower 2017W42 95% Lower 2017W 43 95% Lower 2017W44 95% Lower Forecast 95% Upper Forecast 95% Upper Forecast 95% Upper Forecast 95% Upper SKU 41943 1A191 1A134 41980 41978 22017 42016 41942 420AA 41995 41994 40827 42044 42022 41992 41943 42020 44336 4433A 44338 41972 42009 41941 3732A 41940 1A194 42048 42010 42023 42010 41983 41962 42032 42043 4993A 42031 42019 4202A 42012 42042 37325 42000 2A110 41997 41948 4197 41973 41959 44874 2A201 1A142 1A0A9 42033 41949 A2019 A2011 42005 A2012 A2010 A2014 28 30 28 30 31 32 33 34 35 3546 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 36 295 420AA 296 420AA 297 420AA 298 420AA 299 420AA 300 420AA 301 420AA 302 420AA 303 420AA 304 420AA 305 420AA 1 41979 2 41979 3 41979 4 41979 5 41979 2017 2017 2017 2017 2017 2017 2017 2017 2017 2017 2017 2012 2012 2012 2012 2012 6 2 6 6 5 9 6 7 3 5 27 27 31 48 36 37 32 30 NA NA NA NA NA 37 38 39 40 1 NA 2 NA 3 NA 4 NA 5 NA 5

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