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You are given the following budgeted and actual data for the Grey Company for each of the months January through June of the current year. In December of the prior year, sales were forecasted as follows: January, 92 units; February, 87 units; March, 94 units; April, 99 units; May, 106 units; June, 114 units. In January of the current year, sales for the months February through June were reforecasted as follows: February, 82 units; March, 94 units; April, 94 units; May, 96 units; June, 109 units. In February of the current year, sales for the months March through June were reforecasted as follows: March, 89 units; April, 94 units; May, 91 units; June, 109 units. In March of the current year, sales for the months April through June were reforecasted as follows: April, 94 units; May, 86 units; June, 99 units. In April of the current year, sales for the months May and June were reforecasted as follows: May, 76 units; June, 94 units. In May of the current year, sales for June were reforecasted as 94 units. Actual sales for the six-month period, January through June, were as follows: January, 80 units; February, 82 units; March, 83 units; April, 91 units; May, 110 units; June, 120 units. Required: 1. Prepare a schedule of forecasted sales, on a rolling basis, for the months January through June, inclusive. (Hint: There will be only one forecasted number for Januarythis is the forecast done in December. For February, there will be two forecasts: one done in December and a second done in January. For June, there will be six forecasts, one done in each of the preceding six months.) 2. For each of the months March through June, determine the 3-month forecast error rate, defined as 1 minus the absolute percentage error. For example, the forecast error rate for Marchs sales is found by dividing the absolute value of the forecast error for this month by the actual sales volume for the month. The forecast error for any month (e.g., March) is defined as the difference between the actual sales volume for the month and the sales volume for that month forecasted 3 months earlier (e.g., December). Also, indicate for each month whether the actual sales volume was above or below the forecasted volume generated three months earlier.

Prepare a schedule of forecasted sales, on a rolling basis, for the months January through June, inclusive. (Hint: There will be only one forecasted number for Januarythis is the forecast done in December. For February, there will be two forecasts: one done in December and a second done in January. For June, there will be six forecasts, one done in each of the preceding six months.)

	Month of Forecast for Month of Forecast January February March April May June December January February March April May

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	January February March April May June Actual sales Forecast error rate - - % % % % Direction of error - -

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