ve any one of the following subquestions:
The median of the following data is 49.2 Find the values off, and if f = 90:
Marks 20 - 30 30 – 40 40 – 50 50 – 60 60 – 70 70 – 80/80 – 90
Frequency
15 25 20
8 10
Answers
Answer:
hello........... ...
Answer:
the question is incomplete or in correct please post pic of this question as you can see we can easily find median missing frequencies must be in between hope you understand
Step-by-step explanation:
c.i frequency cumulative frequency
20 - 30 15 15 now,
30 - 40 25 40 median class is 40 - 50
40 - 50 20 60 l = 40 , c.f = 40, f = 20 , h =10
50 - 60 8 68 n/2 = 90/2 =45
60 - 70 10 78 median
70 - 80 f1 78 + f1
80 - 90 f2 78 + f1 + f2
sum of 90
frequency and 78 + f1 + f2 = 90
f1 + f2 = 12