STATISTICAL TECHNIQUES AND TOOLS
MEASURES OF VARIABILITY
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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 is an outlier in your data?
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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: -What is the most appropriate measure of central tendency when the data has outliers? The median is usually preferred in these situations because the value of the mean can be distorted by the outliers.
Detailed explanation-2: -Determining Outliers Multiplying the interquartile range (IQR) by 1.5 will give us a way to determine whether a certain value is an outlier. If we subtract 1.5 x IQR from the first quartile, any data values that are less than this number are considered outliers.
Detailed explanation-3: -For distributions that have outliers or are skewed, the median is often the preferred measure of central tendency because the median is more resistant to outliers than the mean.
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