Percentile Formula For Grouped Data

Percentile Formula for Grouped Data

Information :

Be = Bottom of Edge

F_i = Sum frequency earlier ith percentile data

f_i = Frequency of the ith percentile data

c = Class Length

P_i = Percentile ith

i = 1,2, ... ,99

Example :

Please nurture one's heed the 50th percentile of the information inwards the tabular array below !

Answer :

n = 8 + ten + xiii + 17 + fourteen + eleven + vii = 80

the place of the fifth percentile = Location information : (5(80 + 1)/100)

the place of the fifth percentile = Location information : (5(81)/100)

the place of the fifth percentile = Location information : (50(81)/100)

the place of the fifth percentile = Location information : (405/100)

the place of the fifth percentile = Location information : 40,5

So the frequency of fifth percentile = 17

f₅₀ = 17

Be = 45 - 0,5 = 44.5

F₅₀ = 8 + ten + xiii = 31

c = 35 - xxx = 5

So the 50th percentile of the information is 47.15.

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Reference :

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