To calculate the Pearson 2 coefficient of skewness Sk2 for a sample,we need the
A)mean,median,and mode.
B)mean,median,and standard deviation.
C)mean,mode,and standard deviation.
D)mode and quartiles.

Question

Quizplus · Accepted Answer

To calculate the Pearson 2 coefficient of skewness, we need to know the mean, median, and standard deviation of the sample. Therefore, option B (mean, median, and standard deviation) is the best choice. Option A (mean, median, and mode) is not sufficient because the mode is not always a reliable measure of central tendency. Option C (mean, mode, and standard deviation) is also not sufficient because the mode and mean may not always be the same, and mode does not give any information about the spread of the data. Option D (mode and quartiles) is also not sufficient because it does not provide information about the mean and standard deviation of the sample, which are necessary for calculating Pearson 2 skewness.

To Calculate the Pearson 2 Coefficient of Skewness Sk2 for a Sample,we