if the mean of the following.
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The value of p is 20.
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Snehal2004:
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Solution :-
x frequency (f) fx
10 3 30
15 10 150
P 25 25P
25 7 175
35 5 175
___________________________________________________
N = 50 Σfx = 530 + 25P
___________________________________________________
Mean = Σfx/N
⇒ 20.6 = (530 + 25P)/50
⇒ 20.6*50 = 530 + 25P
⇒ 1030 - 530 = 25P
⇒ 25P = 500
⇒ P = 500/25
⇒ P = 20
So, the value of P is 20
Answer.
x frequency (f) fx
10 3 30
15 10 150
P 25 25P
25 7 175
35 5 175
___________________________________________________
N = 50 Σfx = 530 + 25P
___________________________________________________
Mean = Σfx/N
⇒ 20.6 = (530 + 25P)/50
⇒ 20.6*50 = 530 + 25P
⇒ 1030 - 530 = 25P
⇒ 25P = 500
⇒ P = 500/25
⇒ P = 20
So, the value of P is 20
Answer.
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