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a) Which of the following is least affected if an extreme high outlier is added to...

a) Which of the following is least affected if an extreme high outlier is added to your data?

A. The median.
B. The mean.
C. The standard deviation.
D. None of the above.

(b) If a distribution is skewed to the right,

A. the mean is less than the median.
B. the mean and median are equal.
C. the mean is greater than the median.
D. None of the above.

(c) What percent of the observations in a distribution lie between the first quartile and the third quartile?

A. 50%.
B. 75%.
C. 25%.
D. None of the above.

Math   Statistics-And-Probability   
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