STATISTICAL TECHNIQUES AND TOOLS
MEASURES OF CENTER AND SPREAD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which measure of center should you use if there are no outliers?
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mean
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median
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -For example, the median is often used as a measure of central tendency for income distributions, which are generally highly skewed. Because the median only uses one or two values, it’s unaffected by extreme outliers or non-symmetric distributions of scores.
Detailed explanation-2: -It’s best to use the mean when the distribution of the data values is symmetrical and there are no clear outliers. It’s best to use the median when the the distribution of data values is skewed or when there are clear outliers.
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