Please answer me nowques: if the mean of the folloeing data is 20.2. F

1.	Please answer me nowques: if the mean of the folloeing data is 20.2. Find the value of P
Answer» According to the question, <P> MEAN = 20.2 So, ∑fixi/∑fi = 20.2 So we get , ∑fixi = (10×6) + (15×8)+(20×p)+(25×10)+(30×6) =610+20p we also get , ∑fi=6+8+p+10+6 =30+p Therefore , ∑fixi/∑fi=20.2 (610+20p) / 30(p=20.2 20.2 (30+p) / 30 p = 20.2 606 + 20.2 p = 610+20p 20.2p - 20 p = 610 - 606 0.2p =4 p = 4/0.2 p =20

Please answer me nowques: if the mean of the folloeing data is 20.2. Find the value of P

Answer»

<P>

MEAN = 20.2

So,

So we get ,

=610+20p

we also get ,

Therefore ,

(610+20p) / 30(p=20.2

20.2 (30+p) / 30 p = 20.2

606 + 20.2 p = 610+20p

20.2p - 20 p = 610 - 606

0.2p =4

p = 4/0.2

p =20