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Class VI
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Class IX
Class X
SSC Grade IX - Statistics
Question
1
1.
Find the sum of frequencies for the given table
Value
14
15
37
40
62
68
75
76
Frequency
1
1
1
1
2
1
2
1
9
8
10
13
11
Question
2
2.
The class size used in the below table is
Class-Interval
22 - 30
30 - 38
38 - 46
46 - 54
54 - 62
62 - 70
70 - 78
78 - 86
Frequency
25
29
17
20
20
28
9
1
6
7
9
8
10
Question
3
3.
In exclusive form representation, the observation
22
falls in which class?
22
-
32
12
-
22
17
-
22
32
-
42
27
-
37
Question
4
4.
If the lower and upper limit of class interval are 41 and 49 respectively, then the class interval is
40.5
-
49
41
-
49.5
41.5
-
48.5
40.5
-
49.5
41
-
49
Question
5
5.
Following are the ages (in years) of patients getting medical treatment in a hospital. Identify the cumulative frequency of the given grouped data.
Age (in years)
20 - 25
25 - 30
30 - 35
35 - 40
40 - 45
45 - 50
50 - 55
No. of Patients
33
89
57
72
76
65
83
Age (in years)
Cumulative Frequency
20 - 25
33
25 - 30
90
30 - 35
179
35 - 40
251
40 - 45
327
45 - 50
392
50 - 55
475
Age (in years)
Cumulative Frequency
20 - 25
33
25 - 30
122
30 - 35
179
35 - 40
249
40 - 45
325
45 - 50
390
50 - 55
473
Age (in years)
Cumulative Frequency
20 - 25
33
25 - 30
116
30 - 35
173
35 - 40
245
40 - 45
321
45 - 50
386
50 - 55
475
Age (in years)
Cumulative Frequency
20 - 25
33
25 - 30
122
30 - 35
179
35 - 40
251
40 - 45
327
45 - 50
392
50 - 55
475
Age (in years)
Cumulative Frequency
20 - 25
33
25 - 30
122
30 - 35
184
35 - 40
256
40 - 45
332
45 - 50
397
50 - 55
480
Question
6
6.
Identify the class interval table for the given histogram.
Class-Interval
31 - 34
34 - 37
37 - 40
40 - 43
43 - 46
46 - 49
49 - 52
Frequency
41
121
79
46
73
95
84
Class-Interval
31 - 34
34 - 37
37 - 40
40 - 43
43 - 46
46 - 49
49 - 52
Frequency
41
121
81
43
73
95
84
Class-Interval
31 - 34
34 - 37
37 - 40
40 - 43
43 - 46
46 - 49
49 - 52
Frequency
41
84
79
43
73
95
121
Class-Interval
31 - 34
34 - 37
37 - 40
40 - 43
43 - 46
46 - 49
49 - 52
Frequency
41
121
79
43
73
95
84
Class-Interval
31 - 34
34 - 37
37 - 40
40 - 43
43 - 46
46 - 49
49 - 52
Frequency
41
79
121
43
73
95
84
Question
7
7.
Given class interval table, find the sum of frequencies.
Class-Interval
46 - 54
55 - 63
64 - 72
73 - 81
82 - 90
91 - 99
100 - 108
Frequency
8
8
5
16
8
13
8
65
68
66
67
63
Question
8
8.
If some random sample data is arranged in a frequency distribution table in
exclusive form
with
1
-
11
as the first class,
then the observation
23
falls in which class?
21.5
-
30.5
22
-
32
21
-
31
20
-
30
20.5
-
31.5
Question
9
9.
Heights of 201 plants (in cm) are given below.
Identify the class interval table for the given histogram.
Height (in cm)
62 - 67
67 - 72
72 - 77
77 - 82
82 - 87
87 - 92
No. of plants
41
50
9
41
40
20
Height (in cm)
62 - 67
67 - 72
72 - 77
77 - 82
82 - 87
87 - 92
No. of plants
41
20
50
41
40
9
Height (in cm)
62 - 67
67 - 72
72 - 77
77 - 82
82 - 87
87 - 92
No. of plants
41
9
50
43
40
20
Height (in cm)
62 - 67
67 - 72
72 - 77
77 - 82
82 - 87
87 - 92
No. of plants
41
9
50
41
40
20
Height (in cm)
62 - 67
67 - 72
72 - 77
77 - 82
82 - 87
87 - 92
No. of plants
41
9
46
41
40
20
Question
10
10.
Heights of 10 plants (in cm) are given below. Find the median height.
54
53
51
85
77
79
58
85
99
79
80
cm
78
cm
79
cm
76
cm
77
cm
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