Q. 23 B5.0( 2 Votes )

# The mean of the following frequency distribution is 78. Find the value of p.

Answer :

Mean = 78 (Given)

According to the direct method

Mean =

⇒ 2886 + 78p = 2665 + 95p

⇒ 17p = 221

__Value of p is 13__

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