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Problem: From the following frequency table of expenses incurred by employees of an organization. Calculate  P25, P40 and P75.

 

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Solution:

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25th Percentile (P25)

In case of frequency distribution 25th percentile can be calculated by using the formula given below:

 

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40th Percentile (P40)


40th percentile of frequency distribution can be calculated by using the formula given below:

 

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75th Percentile (75)

75th percentile of frequency distribution can be calculated by using the formula given below:

 

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