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Class VI
Class VII
Class VIII
Class IX
Class X
CBSE Grade X - Statistics
Question
1
1.
The daily wages of
96
workers in a factory are given below.
Find the
median wage.
Wage (in rupees)
20 - 28
28 - 36
36 - 44
44 - 52
52 - 60
60 - 68
No. of workers
17
25
9
17
10
18
₹
41.33
₹
42.00
₹
42.33
₹
41.67
₹
43.33
Question
2
2.
A frequency distribution table is given below.
Find the
mode .
Class-Interval
10 - 19
19 - 28
28 - 37
37 - 46
46 - 55
55 - 64
Frequency
16
28
42
49
49
9
45
46
48
47
44
Question
3
3.
Heights of 16 plants are given below. Find the mode.
Height (in cm)
58
60
67
73
83
84
86
87
91
99
No. of plants
4
1
1
1
3
1
1
1
2
1
57
cm
56
cm
58
cm
59
cm
60
cm
Question
4
4.
Convert the continuous form of the class interval 41.5 - 51.5 to discontinuous form
41.5
-
51
42.5
-
50.5
41.5
-
51.5
42
-
51.5
42
-
51
Question
5
5.
Scores of 15 students are given below. Find the mean.
Score
73
74
75
77
80
82
83
84
85
88
No. of students
1
1
2
1
2
1
4
1
1
1
247
3
242
3
244
3
241
3
81
Question
6
6.
Daily wages of 98 labourers (in ₹) are given below.
Identify the frequency distribution table for the given '
median
' ogive.
Daily wage (in Rs)
278 - 287
288 - 297
298 - 307
308 - 317
318 - 327
328 - 337
338 - 347
348 - 357
No. of labourers
7
5
15
6
16
19
17
13
Daily wage (in Rs)
278 - 287
288 - 297
298 - 307
308 - 317
318 - 327
328 - 337
338 - 347
348 - 357
No. of labourers
7
5
10
15
16
19
17
13
Daily wage (in Rs)
278 - 287
288 - 297
298 - 307
308 - 317
318 - 327
328 - 337
338 - 347
348 - 357
No. of labourers
7
5
6
15
14
19
17
13
Daily wage (in Rs)
278 - 287
288 - 297
298 - 307
308 - 317
318 - 327
328 - 337
338 - 347
348 - 357
No. of labourers
7
5
6
15
16
19
17
13
Daily wage (in Rs)
278 - 287
288 - 297
298 - 307
308 - 317
318 - 327
328 - 337
338 - 347
348 - 357
No. of labourers
7
13
6
15
16
19
17
5
Question
7
7.
Weights of 80 students (in kg) are given below.
Identify the frequency distribution table for the given '
more than
' ogive.
Weight (in kg)
55 - 62
62 - 69
69 - 76
76 - 83
83 - 90
No. of students
15
12
18
18
17
Weight (in kg)
55 - 62
62 - 69
69 - 76
76 - 83
83 - 90
No. of students
15
17
15
18
12
Weight (in kg)
55 - 62
62 - 69
69 - 76
76 - 83
83 - 90
No. of students
15
14
18
18
12
Weight (in kg)
55 - 62
62 - 69
69 - 76
76 - 83
83 - 90
No. of students
15
18
17
18
12
Weight (in kg)
55 - 62
62 - 69
69 - 76
76 - 83
83 - 90
No. of students
15
17
18
18
12
Question
8
8.
The following frequency distribution table gives
the monthly consumption of electricity of
74
consumers in a locality.
Find the
mean units.
Monthly consumption (in units)
59 - 69
69 - 79
79 - 89
89 - 99
99 - 109
109 - 119
119 - 129
No. of consumers
9
16
8
13
12
5
11
3492
37
units
3419
37
units
3420
37
units
3418
37
units
3455
37
units
Question
9
9.
Heights of 15 plants are given below. Find the median.
Height (in cm)
52
62
70
74
86
91
97
100
No. of plants
2
2
3
3
1
1
1
2
73
cm
72
cm
75
cm
74
cm
76
cm
Question
10
10.
Rainfall of 30 days are given below. Find the mean.
Rainfall (in mm)
5
6
7
8
11
12
15
No. of days
2
5
4
2
4
5
8
184
15
mm
31
3
mm
154
15
mm
169
15
mm
52
5
mm
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