14. The median cannot be found for variables measured at the nominal level becausea. there is no central tendency|b. the scores cannot be ranked or orderedc. all of the cases are representative|d. the distribution is skewed15. In any distribution, the mean and the median will have the same value when the distribution isa. symmetrical|b. positively skewedc. negatively skewed|d. all of the above16. When interval-ratio data are highly skewed, the best indicator of central tendency is thea. modeb. medianc. meand. first quartile17. Measures of dispersion provide an indication of thea. typical or most common scoreb. variation within the distribution of scoresc. size of the sampled. adequacy of the selection criteria for the sample18. One problem with the range (R) as a measure of dispersion is that it| a. is very difficult to calculateb. ignores the most extreme scoresc. can be used only for nominal level variablesd. is based on only the most extreme scores 9. Frequency distributions may be compiled for variables measured at which level?a. nominalb. ordinalc. interval-ratio|d. all of the above|10. Cumulative frequencies and cumulative percentages allow a rescarcher toa. be sure the column totals are correctb. tell at a glance how many cases fall above or below a given category|c. show the accuracy of his or her findingsd. all of the above11. For a single variable measured at the nominal level, an appropriate and helpful graph to create would bea. a pie chartb. a histogramc. a frequency polygon|d. a bivariate table12. If you were studying the color of movie stars' eyes as a variable, what measure of central tendency would be most appropriate to summarize data?a. medianb. modec. meand. none of the above|13. If you have an even number of scores in a distribution and you arrange them from high to low, the median isa. the middle score|b. the average of the two middle scoresc. the average of the highest and lowest scores|d. the same as the mode

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9. Frequency distributions may be compiled for variables measured at which level? a. nominal |b. ordinal |c. interval-ratio d. all of the above