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Unformatted text preview: classes labeled on the X-axis. 4. You will need to have medians for each income class. Assume the median for the highest class is $165,000. 5. Find the mean and standard deviation for each of the three categories. To do this, follow the procedure in section 3.6 of the text: Construct three separate tables showing your worksheet calculations for each of the variables (columns for the classes, M, f, f*M, and f*(M-avg)^2, as well as the column sums needed to calculate the means and standard deviations). 6. Calculate the coefficient of variation for each variable. 7. Go back to #3 and insert a vertical arrow line at the mean income for each of the three variables (Use Insert and Shapes)....
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- Fall '10