Question

In a continuous series sigmaf=72, cumulative frequency of class 30-40 is 30 and the cumulative frequency of the class 40-50 is 37. find the median class​

Answer 1

Answer:

Class intervalFrequency Cumulative frequency  0−10f1f1  10−205 5+f1  20−309 14+f1  30−4012 26+f1  40−50f2 26+f1+f2  50−603 29+f1+f2  60−702 31+f1+f2   N=40 ⇒  Median=32.5, then 30−40 is class interval.

⇒  l=30,cf=14+f1,f=12 and h=40−30=10.

⇒  N=40,2N

Step-by-step explanation:

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