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If the Mean of the Following Data is 20.6. Find the Value of P. - Mathematics

If the mean of the following data is 20.6. Find the value of p.

x 10 15 P 25 35
f 3 10 25 7 5
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Solution

x f fx
10 3 30
5 10 150
P 25 25P
25 7 175
35 5 175
  N = 50 `sum`fx = 530 + 25P

Given

⇒ Mean = 20.6

`rArr(sumfx)/N=20.6`

`rArr(530+25P)/50=20.6`

⇒ 25P = 20.6(50) - 530

`rArrP=500/25`

⇒ P = 20

  Is there an error in this question or solution?
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APPEARS IN

RD Sharma Class 10 Maths
Chapter 15 Statistics
Exercise 15.1 | Q 3 | Page 5
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