Sponsor Area
Measures Of Central Tendency
The following series relates to the daily income of workers employed in a firm. Compute the (a) highest income of lowest 50% workers, (6) minimum income earned by the top 25% and (c) maximum income earned by lowest 25% workers.
|
Daily Income (in Rs.) |
Number of Workers |
|
10-14 15-19 20-24 25-29 30-34 35-39 |
5 10 15 20 10 5 |
Value of 32.5 item lies in 24.5 - 29.5 class interval.
Value of 16.25 item lies in 19.5 - 24.5 class interval
Value of 47.75 lies in 24.5 - 29.5 class interval.
Some More Questions From Measures of Central Tendency Chapter
Comment on whether the following statements are True or False.
Following information pertains to the daily income of 150 families. Calculate the arithmetic means.
Income (in Rs.)
No. of Families
More than 75
More than 85
More than 95
More than 105
More than 115
More than 125
More than 135
More than 145
150
140
115
95
70
60
40
25
Income (in Rs.)
No. of Families
More than 75
More than 85
More than 95
More than 105
More than 115
More than 125
More than 135
More than 145
150
140
115
95
70
60
40
25
If the arithmetic mean of the data given below is 28, find (a) the missing frequency and (b) the median of the series.
Profit per retail shop (in Rs.)
Number of retail shops
0-10
10-20
20-30
30-40
40-50
50-60
12
18
27
–
17
6
Profit per retail shop (in Rs.)
Number of retail shops
0-10
10-20
20-30
30-40
40-50
50-60
12
18
27
–
17
6
The following series relates to the daily income of workers employed in a firm. Compute the (a) highest income of lowest 50% workers, (6) minimum income earned by the top 25% and (c) maximum income earned by lowest 25% workers.
Daily Income (in Rs.)
Number of Workers
10-14
15-19
20-24
25-29
30-34
35-39
5
10
15
20
10
5
Daily Income (in Rs.)
Number of Workers
10-14
15-19
20-24
25-29
30-34
35-39
5
10
15
20
10
5
The following table gives production yield in kg. per hectare of wheat of 150 arms in a village. Calculate the mean, median and mode production yield.
Production yield (kg. per hectare)
50-53
53-56
56-59
59-62
62-65
65-68
68-71
71-74
74-77
Number of farms
3
8
14
30
36
28
16
10
5
Production yield (kg. per hectare)
50-53
53-56
56-59
59-62
62-65
65-68
68-71
71-74
74-77
Number of farms
3
8
14
30
36
28
16
10
5
The size of land holdings of 380 families in a village is given below. Find the median size of land holdings.
Size of Land Holdings (in acres)
Number of families
less than 100
100-200
200-300
300-400
400 and above
40
89
148
64
39
Size of Land Holdings (in acres)
Number of families
less than 100
100-200
200-300
300-400
400 and above
40
89
148
64
39
What do you mean by 'Average'?
Pocket expenditures of 6 students are (Rs.) 6,12,18,24,30 and 36 respectively. Find out arithmetic mean.
Name various kinds of statistical averages?
Give formula of weighted averages.
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Mock Test Series
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