METHODS OF DATA ANALYSIS
MEASURES OF DISPERSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which descriptive statistic involves calculating how far the data is spread around the mean?
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Mean
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Median
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Mode
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Range
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Standard deviation
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Explanation:
Detailed explanation-1: -Variance reflects the degree of spread in the data set. The more spread the data, the larger the variance is in relation to the mean. To find the variance, simply square the standard deviation.
Detailed explanation-2: -A standard deviation (or ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.
Detailed explanation-3: -The formula for standard deviation is the square root of the sum of squared differences from the mean divided by the size of the data set.
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