OPMA 3306 CHAPTER 3 HOMEWORK REVIEW QUESTIONS AND ANSWERS UTA OPERATIONS
MANAGEMENT FORECASTING STUDY GUIDE 2026/2027
What is the term for forecasts used for making day-to-day decisions about meeting demand? -
ANS ✔✔Tactical forecasts
What category of forecasting techniques uses managerial judgment in lieu of numerical data? -
ANS ✔✔Qualitative techniques
Given the following history, use a three-quarter moving average to forecast the demand for the
third quarter of this year. Note that the 1st quarter is Jan, Feb, and Mar; 2nd quarter Apr, May,
Jun; 3rd quarter Jul, Aug, Sep; and 4th quarter Oct, Nov, Dec. (Round final answer to a whole
number.)
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
150 170 190 225 235 250 195 185 175 250 275 295 (Last year)
170 190 175 245 270 215 (This year) - ANS ✔✔695.
Ft = At-1 + At-2 + .... At-n = (Add the sum of this year's demand of Jan, Feb, and Mar to the sum
of this year's demand of Apr, May, Jun to the sum of last year's demand of Oct, Nov, Dec then
divide those three sums by 3 to get the forecast of demand for the third quarter of this year).
245 + 270 + 215 = 730
170 + 190 + 175 = 535
250 + 275 + 295 = 820
(730 + 535 + 820)/3 = 695
Here are the data for the past 21 months for actual sales of a particular product:
LAST YEAR THIS YEAR
January 370 295
, February 415 350
March 405 355
April 435 440
May 430 450
June 495 385
July 415 365
August 330 290
September 385 350
October 515
November 600
December 495
Develop a forecast for the fourth quarter using a three-quarter, weighted moving average.
Weight the most recent quarter 0.50, the second most recent 0.25, and the third 0.25. Solve the
problem using quarters, as opposed to forecasting separate months. (Round your answer to 2
decimal places.) - ANS ✔✔Q1 This Year: (295+350+355)0.25 = 250
Q2 This Year: (440+450+385)0.25 = 318.75
Q3 This Year: (365+290+350)0.50 = 502.5
Q4 This Year: 250 + 318.75 + 502.5 = 1071.25
The following table contains the number of complaints received in a department store for the
first 6 months of operation: (Round final answer to a whole number.)
MONTH COMPLAINTS
MANAGEMENT FORECASTING STUDY GUIDE 2026/2027
What is the term for forecasts used for making day-to-day decisions about meeting demand? -
ANS ✔✔Tactical forecasts
What category of forecasting techniques uses managerial judgment in lieu of numerical data? -
ANS ✔✔Qualitative techniques
Given the following history, use a three-quarter moving average to forecast the demand for the
third quarter of this year. Note that the 1st quarter is Jan, Feb, and Mar; 2nd quarter Apr, May,
Jun; 3rd quarter Jul, Aug, Sep; and 4th quarter Oct, Nov, Dec. (Round final answer to a whole
number.)
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
150 170 190 225 235 250 195 185 175 250 275 295 (Last year)
170 190 175 245 270 215 (This year) - ANS ✔✔695.
Ft = At-1 + At-2 + .... At-n = (Add the sum of this year's demand of Jan, Feb, and Mar to the sum
of this year's demand of Apr, May, Jun to the sum of last year's demand of Oct, Nov, Dec then
divide those three sums by 3 to get the forecast of demand for the third quarter of this year).
245 + 270 + 215 = 730
170 + 190 + 175 = 535
250 + 275 + 295 = 820
(730 + 535 + 820)/3 = 695
Here are the data for the past 21 months for actual sales of a particular product:
LAST YEAR THIS YEAR
January 370 295
, February 415 350
March 405 355
April 435 440
May 430 450
June 495 385
July 415 365
August 330 290
September 385 350
October 515
November 600
December 495
Develop a forecast for the fourth quarter using a three-quarter, weighted moving average.
Weight the most recent quarter 0.50, the second most recent 0.25, and the third 0.25. Solve the
problem using quarters, as opposed to forecasting separate months. (Round your answer to 2
decimal places.) - ANS ✔✔Q1 This Year: (295+350+355)0.25 = 250
Q2 This Year: (440+450+385)0.25 = 318.75
Q3 This Year: (365+290+350)0.50 = 502.5
Q4 This Year: 250 + 318.75 + 502.5 = 1071.25
The following table contains the number of complaints received in a department store for the
first 6 months of operation: (Round final answer to a whole number.)
MONTH COMPLAINTS
