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Channel: Measure of Dispersion – Basic Statistics and Data Analysis
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kurtosis is a measure of peakedness of a distribution relative to the normal...

Measure of Kurtosis kurtosis is a measure of peakedness of a distribution relative to the normal distribution. A distribution having a relatively high peak is called leptokurtic. A distribution which...

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Skewness is the degree of asymmetry or departure from symmetry of the...

Skewness Skewness is the degree of asymmetry or departure from symmetry of the distribution of a real valued random variable. Positive Skewed If the frequency curve of a distribution has a longer tail...

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The Moments are used to Identify the Shape of the Distribution

Moments Measure of central tendency (location) and measure of dispersion (variation) both are useful to describe a data set but both of them fail to tell anything about the shape of the distribution....

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Measure of dispersion/ variability or scatter describes the spread of the...

The measure of location or averages or central tendency is not sufficient to describe the characteristics of a distribution, because two or more distributions may have averages which are exactly alike,...

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Descriptive Statistics for Multivaraite Data set

Measure of Location, Spread and Correlation for Multivariate Data Much of the information contained in the data can be assessed by calculating certain summary numbers, known as descriptive statistics...

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Absolute Measures of Dispersion

Absolute measures gives an idea about the amount of dispersion/ spread in a set of observations. These quantities measures the dispersion in the same units as the units of original data. Absolute...

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Range: Measure of Dispersion

Measure of Central Tendency provides typical value about the data set, but it does not tell the actual story about data i.e. mean, median and mode are enough to get summary information, though we know...

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Standard Deviation: A Measure of Dispersion

Standard Deviation The standard deviation is a widely used concept in statistics and it tells how much variation (spread or dispersion) is in the data set. It can be defined as the positive square root...

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