(I If the Mean of a Frequency Distribution Is Smaller

question 51

Multiple Choice

(i. If the mean of a frequency distribution is smaller than the median and mode, the Pearson's coefficient of skewness would be negative. (ii) The only time the variance equals the standard deviation is when both equal 1.
(iii) According to the Empirical Rule, 90 percent of the observations lie within plus and minus one standard deviation of the mean.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements, but not (i).
• E) (i), (ii) and (iii) are all false statements.

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