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1. For the data below: Month January February March April May June Automobile Battery Sales 20 21 15 14 13 16 Month July August September

1. For the data below: Month January February March April May June Automobile Battery Sales 20 21 15 14 13 16 Month July August September October November December a) Develop a three-month moving average. b) Compute MAD. Automobile Battery Sales 17 18 20 20 21 23

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