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The next concept that we are going to see is person percentiles, if you see is actually a measure of

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dispersion.

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Let me explain this using an example, percentile is a way to rank the data.

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Here you see the height of different people are being analyzed and there are 20 people in this group.

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Suppose if someone sees the 80th percentile is five feet, 11 inches, it means.

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Eighty percent of the people are below five feet and 11 inches, this person, this person side is five

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feet, 11 inches.

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If this person corresponds to the 80th percentile, 80 percent of the people are below this person.

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Right, in terms of height.

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Right.

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So, you see, percentile is the ranking mechanism.

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This concept is used in competitive exams like it said Gary Gmod cat, you know, to rank these students

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performance.

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We going to use the concept of percentile to understand dispersion and also to identify outliers, outliers

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will be covered in other.