Question

The arithmetic mean of the following frequency distribution is 50, find the
value of p. Hence find the mode of the data.
Classes : 0-20 20-40 40-60 60-80 80-100
Frequency : 17 p 32 24 19

Answer 1

Mid value 10,30,50,70
Mean = 50
So 17*10+30p+32*50+70*24+90*19=50(92+p)
P=8