Find the number of workers with wages i) less than Rs 500 ii) at least Rs 400
Salary in Rs
200-300
300-400
400-500
500-600
No of workers
15
25
30
12
Answers
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Answer:
Daily Wages
Frequency f
i
cf
0−100
40
40
100−200
32
72
200−300
48
120
300−400
22
142
400−500
8
150
∑f
i
=150
Where cf= cumulative frequency
Here
N=150
2
N
=75
cf just greater than 75 to 120
Median class 200−300
So, I=200, h=100, f=48 and
cf=cf of preceding class i.e 72
Substitute all the value in the above formula, we get
Median =200+{100×
48
(75−72)
}
=200+6.25
=206.25
Median of daily wages is Rs. 206.25
Step-by-step explanation:
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