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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The positive square root is taken of the population variance then collected measure is transformed into ____
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Standard root
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Standard deviation
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Standard variance
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Sample variance
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Explanation:
Detailed explanation-1: -The positive square root of the population variance is equal to the population standard deviation.
Detailed explanation-2: -The standard deviation is simply the square root of the variance. This is a useful and interpretable statistic because taking the square root of the variance (recalling that variance is the average squared difference) puts the standard deviation back into the original units of the measure we used.
Detailed explanation-3: -The square root of the population variance is the population standard deviation, which represents the average distance from the mean. The population variance is a parameter of the population, and is not dependent on research methods or sampling practices.
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