Write the median class for the following frequency distribution:
class interval: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80
Frequency: 5 8 7 12 28 20 10 10
Answers
Answer:
Median class of given frequency distribution = 40 - 50 .
Step-by-step explanation:
We are given the following frequency distribution below;
Class Interval Frequency (f) Cumulative frequency (cf)
0 - 10 5 5
10 - 20 8 13
20 - 30 7 20
30 - 40 12 32
40 - 50 28 60
50 - 60 20 80
60 - 70 10 90
70 - 80 10 100
∑f = 100
Firstly, we will calculate , (where N = ∑f), = = 50.
So, the value of cumulative frequency just greater than or equal to 50 is 60.
Therefore, corresponding median class is 40 - 50 .