The following chart shows the pints of Type B blood used at a hospital in the pa
ID: 408765 • Letter: T
Question
The following chart shows the pints of Type B blood used at a hospital in the past 6 weeks.
WEEK OF PINTS USED
August 31 360
Sept. 7 389
Sept. 14 410
Sept. 21 381
Sept. 28 368
October 5 374
a. Forecast demand for the weekof October 12 using a 3-week moving average.
b. Using a 3 week weighted moving average, with weights 9of .1, .3, and .6, using .6 for the most recent week. Forecast demand for the week of October 12.
c. Compute the forecast for the week of Oct 12, using exponential smoothing with a forecast for August 31 of 360, and a =.2 (It's not really a, but I don't remember what the symbol represents that looks like a cursive-type small a.) Sorry
Explanation / Answer
a. estimated demand based on 3 week moving average= (374+368+381)/3= 374 units
b. based on weighted moving average= 0.6*374+0.3*368+0.1*381= 224.4+110.4+38.1= 372.9 (373)
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