A) Find the median of the following:
1) 4 ,8, 12 ,16 ,20 ,23 ,28, 32. 18
2)13, 22, 25, 8, 11, 19, 17, 31, 16, 10 . 16.5
3) 41, 43, 127, 99 , 61, 92, 71, 58, 57, . If 58 is replaced by 85, what will be the new median? 61, 71
4) Wages No. Of workers
20 8
21 10
22 11
23 16
24 20
25 25
26 15
27 9
28 6 ₹24
4) F: 2 3 4 5 6 7
X: 3 8 10 12 16 14
5) Marks: 20 90 50 70 60 95
No. of students: 4 5 8 10 6 5 70
6) Wages(₹) No. Of person
10-20 1
20-30 3
30-40 11
40-50 21
50-60 43
60-70 32
70-80 9 55.58
7) Marks Frequency
10-25 6
25-40 20
40-55 44
55-70 26
70-85 3
85-100 1 48.18
8) CLASS- interval Frequency
11-15 7
16-20 10
21-25 13
26-30 26
31-35 35
36-40 22
41-45 11
46-50 6 31.79
9) value no of boys
Less than 10 4
Less than 20 16
Less than 30 40
Less than 40 76
Less than 50 96
Less than 60 112
Less than 70 120
Less than 80 125 36.25
10) size no of students
More than 50 0
More than 40 40
More than 30 98
More than 20 123
More than 10 165 32.7
11) Marks No. Of students
Below 10 5
10 - 20 25
20 - 30 40
30 - 40 70
40 - 50 90
50 - 60 40
60 - 70 20
Above 70 10 41.11
12) Weight no.of person
36 - 40 14
41 - 45 26
46 - 50 40
51 - 55 53
56 - 60 50
61 - 65 37
66 - 70 25 54.51
13) wages (₹) No. Of workers
Below 10 8
Below 20 18
Below 30 45
Below 40 90
Below 50 113
Below 60 120 33.33
14) value frequency
Less than 100 40
100 - 200 89
200 - 300 148
300 - 400 64
400 and above 39 241.22
15) Find the missing values from the following information: The median income of 267 persons employed at X Enterprise is 1143.50 and the distribution is
Income class frequency
1110-1120 4
1120-1130 16
1130-1140 --
1140-1150 ---
1150-1160 12
1160-1170 8
1170-1180 2 53.46(53), 172
16)
C-I Frequency
55 - 64 2
65 - 74 19
75 - 84 78
85 - 94 ?
95 - 104 301
105- 114 ?
115-124 92
125-134 14
135-144 4
It is however known that the total frequency is 900 and the median is 100.048. find the two missing frequencies. 184, 206
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