FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 5.13
- Find the weekly average wage from the given frequency :
Wages (`) No. of Workers
30–40 80
40–50 20
50–60 40
60–70 18
70–80 10
80–90 4
[Ans. ` 47.44]
- Find A.M. from the following table :
Wages (`) No. of Workers
20–25 200
25–30 700
30–35 900
35–40 800
40–45 600
45–50 400
[Ans. ` 35.97]
- Compute A.M. of the following distribution :
Class Interval Frequency
1–4 6
4–9 12
9–16 26
16–27 20
[Ans. 8.68]
- A.M. of the following distribution is 124 lb.
Weight (lb) No. of Persons
100 1
110 2
120 3
135 2
x + 5 2
Total 10 [Ans. 140 ]
Find the value of x.
[Hint. Use direct method
