Statistics > STUDY GUIDE > STA 371G - SAMPLE TEST 3 Questions and answers.(REVISED AND APPROVED) (All)

STA 371G - SAMPLE TEST 3 Questions and answers.(REVISED AND APPROVED)

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• Question 1 0 out of 1 points The most common form of autocorrelation is positive autocorrelation, in which: Answer Selected Answer: small observations tend to follow both large a... nd small observations Correct Answer: large observations tend to follow large observations and small observations tend to follow small observations • Question 2 0 out of 1 points The forecast error is the difference between Answer Selected Answer: [None Given] Correct Answer: the actual value and the forecast • Question 3 0 out of 1 points The data below represents sales for a particular product. If you were to use the moving average method with a span of 3 periods, what would be your forecast for period 5? Period Sales (in units) 1 90 2 120 3 110 4 100 Answer Selected Answer: [None Given] Correct Answer: 110 • Question 4 0 out of 1 points Models such as moving average, exponential smoothing, and linear trend use only: Answer Selected Answer: [None Given] Correct Answer: previous values of Y to forecast future values of Y • Question 5 0 out of 1 points Suppose that a simple exponential smoothing model is used (with = 0.40) to forecast monthly sandwich sales at a local sandwich shop. The forecasted demand for September was 1560 and the actual demand was 1480 sandwiches. Given this information, what would be the forecast number of sandwiches for October? Answer Selected Answer: [None Given] Correct Answer: 1528 [Show More]

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