The most serious disadvantage of observation is ________
A) if the observed phenomenon occurs frequently or is of short duration, observational methods may be cheaper and faster than survey methods.
B) the reasons for the observed behavior may not be determined because little is known about the underlying motives, beliefs, attitudes, and preferences.
C) observational methods permit measurement of actual behavior rather than reports of intended or preferred behavior.
D) observational data is often time consuming and expensive and it is difficult to observe certain forms of behavior, such as personal activities.
B
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Two types of retail institutions satisfy the broad definition of a department store: the traditional department store and the _____
a. full-line discount store b. hypermarket c. variety store d. retail catalog showroom
The substitution rates give
A) the number of units of each basic variable that must be removed from the solution if a new variable is entered. B) the gross profit or loss given up by adding one unit of a variable into the solution. C) the net profit or loss that will result from introducing one unit of the variable indicated in that column into the solution. D) the maximal value a variable can take on and still have all the constraints satisfied. E) None of the above