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Subjects>Math>Statistics

What are the common measures of dispersion?

Anonymous

∙ 15y ago

Updated: 4/28/2022

Range, standard deviation, variance, root mean square, interquartile range

Wiki User

∙ 15y ago

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Q: What are the common measures of dispersion?

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What is despersion?

Dispersion is an abstract quality of a sample of data. Dispersion is how far apart or scattered the data values appear to be. Common measures of dispersion are the data range and standard deviation.

What includes the range and the interquartile range?

Both are measures of spread or dispersion.

What important feature of the data set is not revealed through the different measures of centre?

The dispersion of the data.

Why measures of dispersion are important along with measures of central tendency to understand the nature of the data?

Central tendency will only give you information on the location of the data. You also need dispersion to define the spread of the data. In addition, shape should also be part of the defining criteria of data. So, you need: location, spread & shape as best measures to define data.

Why are the measures of dispersion necessary to describe a set of data?

Sets of data have many characteristics. The central location (mean, median) is one measure. But you can have different data sets with the same mean. So a measure of dispersion is used to determine whether there is a little or a lot of variability within the set. Sometimes it is necessary to look at higher order measures like the skewness, kurtosis.

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