Identify when the interquartile range is better than the standard deviation as a

Question

Identify when the interquartile range is better than the standard deviation as a measure of dispersion and explain its advantage Choose the correct answer below. When the distribution is skewed left or right or contains some extreme observations, then the interquartile range is preferred since it uses all the observations in its calculation. When the distribution is symmetric then the interquartile range is preferred since it is resistant. When the distribution is skewed left or tight or contains soma extreme observations then the interquartile range is preferred since it is resistant. When the distribution is symmetric, then the interquartile range is preferred since it is easier to calculate.

Explanation / Answer

Answer:

C.When the distribution is skewed left or right or contains some extreme observations, then interquartile range is preferred since it is resistant.

Interquartile range range is obtaines from quartiles, and quartiles are less affected by extreme values hence interquartile range is better measure of dispersion for skewed data than standard deviation.

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