Actual sales of TV's for the first six month in 2021 were as follows: January      60            February     80          March   42 April           68            May             44           June     72 Use this information and determine in whole numbers: 1 The average actual monthly sales for that period          2 Trends: Reduce this average by 6% per month for the next three months    3 Simple Moving Average (SMA): make a forecast for July using a three months simple moving average.        4 Weighted Moving Average (WMA): make forecast for July, using a three months weighted moving average where the weights are 0.5; 0.3 and 0.2 respectively.

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