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jcocrat

Spread and Range

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Measures of Spread

 

A measure of spread tells us how much a data sample is spread out or scattered. We can use the range and the interquartile range (IQR) to measure the spread of a sample. Measures of spread together with measures of location (or central tendency) are important for identifying key features of a sample to better understand the population from which the sample comes from.

 

Range

 

The range is a measure of spread and it tells us how much a data set is spread out or scattered.

 

Range is defined as the difference between the highest and lowest values.

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