Forecasting A local company sells green hats for St Patrick's Day to bars and restaurants in South-Western Ontario. The operations manager of the company recognizes that green hat business is competitive and risky, and the ability to correctly predict demand for the next season and deliver orders promptly is a big factor in getting new customers and maintaining old ones. Customers typically don't place an order in advance. The operations manager of the firm wants to be certain that enough drivers and vehicles are available to deliver orders promptly and that they produce enough hats for the season. The operations manager wants to be able to forecast the demand for 2020 (before they knew COVID was going to hit). From previous orders, the hat company has the following information for 2010 through 2019. Month 2014 2015 2017 2018 2019 2010 2011 2012 4,500 5,300 5,400 2013 4,800 2016 5,800 Orders 5,900 5,500 6,100 5,600 6,400 What is the mean squared deviation for the three year moving average forecast from 2013 to 2019? What is the three year weighted moving average forecast for 2015? What is the three year weighted moving average forecast for 2020