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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The most common used indicator of the degree of dispersion and is also the most dependable measure to estimate the variability in a total population.
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Mean Deviation
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Range
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Standard Deviation
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Variance
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Explanation:
Detailed explanation-1: -Standard deviation (SD) is the most commonly used measure of dispersion. It is a measure of spread of data about the mean.
Detailed explanation-2: -Consequently, the standard deviation is the most widely used measure of variability.
Detailed explanation-3: -The standard deviation is the average amount of variability in your dataset. It tells you, on average, how far each score lies from the mean. The larger the standard deviation, the more variable the data set is.
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