A human resources (HR) manager wants to see if she can predict job success from a college graduate's final average grade. The manager collects data for a random sample of employees hired in the last two years. The employees ‘grades are in the personnel files (all are college graduates). The HR manager also asks each employee's supervisor to score the employee's performance, using a detailed questionnaire to arrive at a score from 0 (meaning the worst possible performance) to 100 (an outstanding performance). What kind of data are these? Do you see any difficulty with drawing conclusions based on such a study?
Answer to relevant QuestionsExhibit 2.84 below is one method of displaying the data on ice cream flavour preferences, first described in Develop Your Skills 2.3, Exercise 15, on page 70. Comment on this graph as a way of displaying the data. Consider the histogram shown in Exhibit 2.46 on the next page. There are several problems with this histogram. Describe the problems, and how you would fix them. In exhibit Downtown Automotive in Nelson, BC, selects a random sample of daily sales. Create an appropriate graphical display for these data, and comment. Students in Business Studies, Computer Studies, and Engineering Technology Studies were asked to rate their college experience as excellent, good, fair, or poor. Create two graphs to compare the ratings, by program. In the ...Calculate an appropriate measure of central tendency for the quarterly operating profits of the Canadian manufacturing sector. Compare the oil and gas and manufacturing sectors, in terms of central tendency.
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