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Question 27 (B) If the mean of the following distribution is 54, find the value of p.Now, finding mean Now, Mean(𝑥 ̅) = (∑▒𝒇𝒊𝒙𝒊)/(∑▒𝒇𝒊) Putting values in formula 54 = (𝟐𝟑𝟕𝟎 + 𝟑𝟎𝒑)/(𝟑𝟗 + 𝒑) 54(39 + p) = 2370 + 30p 54 × 39 + 54p = 2370 + 30p 2106 + 54p = 2370 + 30p 54p – 30p = 2370 – 2106 24p = 264 p = 264/24 p = 11

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 15 years. He provides courses for Maths, Science and Computer Science at Teachoo