Question

12
ING
Noodles
Find the mean length of leaf
15. An incomplete distribution is given as follows
Vanable 0-10 10-20 20-30 30-40 40-50 50-60 60-70
Frequency 10 20
40 ? 25 15
You are given that the median value is 35 and the sum of all the frequencies is 1701​

Answer 1

Answer:

 Class interval FrequencyCumulative Frequency  0−1010 10  10−2020 30  20−30f1 30+f1  30−4040 70+f1  40−50f2 70+f1+f2  50−6025 95+f1+f2  60−7015 110+f1+f2 Here, Median=35.

∴  median class is 30−40,N=170,then2N=2170=85

L=30,f=40,F=30+f1,h=10

⇒  Now,   Median=L+f