answer with proper excel formulas.

Answer with proper excel formula.

answer with proper excel formula.

A product has a consistent year round demand. You are responsible for the forecast and have been tasked with experimenting with some time series analysis. Using this previous monthly demand, calculate the following forecasts for each period possible. A) 4 Period Simple moving average B) Two Period Weighted moving average using weights of .7,.3, C) three-period weighted moving average with weights of .5, 3,.2 and D) Exponential Smoothing forecast using an Alpha of .40 and a Week 1 forecast of 800 units. Round all forecasts to whole numbers. Q2 For each of the forecasts and demand below, calculate the Mean Absolute Deviation, Mean Squared Error and Mean Absolute Percent Error. Use the ABS formula for Absolute Value. NOTE: Use formulas for each calculation. The Actual demand for snowboards from a large GTA Sporting Goods chain is shown below for 2020. Calculate the Seasonal Index for last year for each of the four seasons. Use the seasonal Index to calculate the demand for each of the seasons for this coming year (Table \#2) based on a new ANNUAL demand of 3200 snowboards. Use two decimal places for your seasonal factor. Round your final forecasts to whole numers