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 variance of a set of data is 18. Find the new variance if each value in the set of the data is substracted by 5 and the divided by 3.
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2
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6
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8
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11
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Explanation:
Detailed explanation-1: -Detailed Solution. ∴ The standard deviation of the data is 9.
Detailed explanation-2: -Understanding Variance It is calculated by taking the differences between each number in the data set and the mean, then squaring the differences to make them positive, and finally dividing the sum of the squares by the number of values in the data set.
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