Unformatted text preview: 5
4 140
6 145
6 146
3 148
5 149
2 150
1 157
1 38. An investor buys Rs.1, 200 worth of shares in a company
each month. During the first 5 months he bought the shares
at a price of Rs.10, Rs.12, Rs.15, Rs.20 and Rs.24 per
share. After 5 months what is the average price paid for the
shares by him.
39.
Determine median from the following data
25, 20, 15, 45, 18, 7, 10, 38, 12
40.
Find median of the following data
Wages (in 6070
5060
4050
3040
2030
Rs)
Number of 7
21
11
6
5
workers
41. The table below gives the relative frequency distribution of
annual pay roll for 100 small retail establishments in a city.
138 Annual pay roll
(1000 rupees)
Less than 10
10 and Less than 20
20 and Less than 30
30 and Less than 40
40 and Less than 50
50 and Less than 60 Establishments
8
12
18
30
20
12
100 Calculate Median pay.
Calculate the median from the data given below
Wages
Number of
Wages
Number of
(in Rs )
workers
(in Rs)
workers
105
Above 70
520
Above 30
45
Above 80
470
Above 40
7
Above 90
399
Above 50
210
Above 60
43.
From the following data, compute the values of upper and
lower quartiles, median, D6, P20.
Marks
No. of.
Marks
No. of.
Students
Students
90
4050
5
Below 10
40
5060
25
1020
20
6070
40
2030
10
Above 70
70
3040
44.
Draw an ogive curve from the following data to find out the
values of median and upper and lower quartiles.
Classes
90100 110 120 130 140 150100
110
120
130
140
150
160
Frequency
16
22
45
60
50
24
10
45.
Calculate mode from the following data
Income 1020 2030 3040 4050 5060 6070 7080
(Rs)
No. of. 24
42
56
66
108
130
154
Persons
42. 139 46. Represent the following data by means of histogram and
from it, obtain value of mode.
Weekly 1015 1520 2025 2530 3035 3540 4045
wages
(Rs)
No. of.
7
9
27
15
12
12
8
Workers
Suggested Activities:
1. Measure the heights and weights of your class students.
Find the mean, median, mode and compare
2. Find the mean marks of your class students in various subjects.
Answers:
I
1. (b)
5. (a)
9. (c)
13. (b) 2. (c)
6. (d)
10. (d)
14....
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 Winter '08
 Moshiri
 Business, Statistics

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