Minor changes in demand that are caused by unknown factors and cannot be foreseen are called ______.
A. cyclic variations
B. random variations
C. predictable variations
D. seasonal variations
B. random variations
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A time series design that includes another group of test units to serve as a control group is called a(n) ________
A) factorial design B) multiple time series design C) posttest-only control group design D) one-shot case study E) alternative group design
When Sony came out with PlayStation®4, it created a website specifically for the new product. This is an example of a microsite.
Answer the following statement true (T) or false (F)
“Cancellation of the positive and negative forecast errors can distort the information.” This is a drawback of ______.
A. mean squared error (MSE) B. mean absolute deviation (MAD) C. mean absolute percentage error (MAPE) D. cumulative sum error (CSE)
Convenience sampling is an example of _____ sampling.
A. probabilistic B. stratified C. nonprobabilistic D. cluster