The Arithmetic Mean of the following frequency distribution is 50. Find the value of p.
Classes 0 -20 20 - 40 40 - 60 60 -80 80 - 100
Frequency 17 p 32 24 19
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mean ,= fx / f
50 = 4960+30p/ 92+p
4600+50p = 4960+30p
20p = 360
p = 18 ans.
50 = 4960+30p/ 92+p
4600+50p = 4960+30p
20p = 360
p = 18 ans.
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