Which of the following measures of forecast accuracy is susceptible to the problem of positive and negative forecast errors offsetting one another?
a. Mean absolute error
b. Mean forecast error
c. Mean squared error
d. Mean absolute percentage error
Question 2
Although both statistical process control and acceptance sampling make inferences on the basis of samples,
a. acceptance sampling involves inspection of a sample of products during the production run.
b. SPC uses sampled products to make inferences about the process from which they came.
c. acceptance sampling uses sampled products to make inferences about a larger population of the products.
d. Both B and C
e. All of the above statements are true.
Measures of ocean chlorophyll-a concentrations from part of Atlantic Canada in (a) January 2006, and
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