Question

can anyone answer this question.... ​

Answer 1

N=70

N/2=35

Median =16, Median class =15−20

So, I=15, h=5, f=15 and

xf=xf of preceding class i.e.24+a

We know,

Median =1+ {h× (N/2 - cf) } /F

Substitute all the value in the above formula, we get

16=15+{5×(35−24−a)/15}

⇒16=15+(11−a)/3

or a=8

Now, 70=55+a+b

70=55+8+b

⇒b=7

so, missing frequincies are 8 and 7.