STATISTICAL TECHNIQUES AND TOOLS
MEASURE OF STANDARD DEVIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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square root
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square
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median of
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mean of
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Detailed explanation-1: -It’s the measure of dispersion the most often used, along with the standard deviation, which is simply the square root of the variance. The variance is mean squared difference between each data point and the centre of the distribution measured by the mean.
Detailed explanation-2: -The variance is the average of the sum of squares (i.e., the sum of squares divided by the number of observations). The standard deviation is the square root of the variance.
Detailed explanation-3: -We know that the standard deviation is the square root of variance of the observations. We also know that the square root of any quantity is always positive or zero. Hence, the standard deviation is always non-negative. Note:The given question revolves around the concepts of statistics.