Which of the following statements is true?
A) A bar chart has many limitations in comparison to pie charts.
B) A bar chart does not allow for the comparison of a single variable across many segments.
C) A bar chart can only be used to represent independent variables.
D) A bar chart indicates the frequency of a variable by using rectangles of different heights or lengths.
D
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When a firm becomes so large it is difficult to coordinate and control, it is most likely that
A) economies of scale have begun. B) diseconomies of scale have begun. C) average total cost begins to fall. D) long-run average costs become negative. E) there are increasing marginal returns to increasing the firm's plant size.
In the United States the real wages of the least-skilled, least educated workers have ________ and the wages of best-educated, highest skilled workers have ________.
A. increased; increased B. declined; remained constant C. increased; declined D. declined; increased