If the mean of the following data is 5 them , find the value of

x_i 5 10 15 20 25

f_i 6 4 5 P 7

Question

If the mean of the following data is 5 them , find the value of

xi
5
10
15
20
25

fi
6
4
5
P
7

Sanjari Kalantri · Accepted Answer

Dear Student,

xâ€‹i
fi

xifi

5
6
30

10
4
40

15
5
75

20
p
20p

25
7
175

Total
22 + p
320 + 20p

Mean = 15 = ∑xifi∑fi⇒ 15 = 320 + 20p22 + p⇒ 330 + 15p = 320 + 20p⇒ 10 = 5p⇒ p = 2

If the mean of the following data is 5 them , find the value of xi 5 10 15 20 25 fi 6 4 5 P 7