EduSahara™ Assignment
Name : Constructing Class Interval Tables
Chapter : Statistics
Grade : CBSE Grade IX
License : Non Commercial Use
Question
1
1.
The marks obtained by
17
students in an examination are given below.
Represent the data in the form of a frequency distribution table
in inclusive form
taking class size
5
.
52
73
57
59
49
65
58
42
62
77
56
79
62
80
76
67
70
(i)
Marks
42 - 46
47 - 51
52 - 56
57 - 61
62 - 66
67 - 71
72 - 76
77 - 81
No. of Students
1
1
2
3
3
2
2
3
(ii)
Marks
42 - 46
47 - 51
52 - 56
57 - 61
62 - 66
67 - 71
72 - 76
77 - 81
No. of Students
1
1
2
3
6
2
2
3
(iii)
Marks
42 - 46
47 - 51
52 - 56
57 - 61
62 - 66
67 - 71
72 - 76
77 - 81
No. of Students
1
1
4
3
3
2
2
3
(iv)
Marks
42 - 46
47 - 51
52 - 56
57 - 61
62 - 66
67 - 71
72 - 76
77 - 81
No. of Students
1
3
2
3
3
2
2
1
(v)
Marks
42 - 46
47 - 51
52 - 56
57 - 61
62 - 66
67 - 71
72 - 76
77 - 81
No. of Students
1
1
3
2
3
2
2
3
Question
2
2.
The marks obtained by
18
students in an examination are given below.
Represent the data in the form of a frequency distribution table
in exclusive form
taking class size
7
.
71
41
73
68
70
73
49
76
69
54
42
49
57
64
44
76
69
46
(i)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
1
3
2
6
2
(ii)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
3
1
2
6
2
(iii)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
3
1
6
6
2
(iv)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
2
1
2
6
3
(v)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
3
6
2
6
2
Question
3
3.
The marks obtained by
18
students in an examination are given below.
Represent the data in the form of a frequency distribution table
in exclusive form
taking class size
6
.
67
40
46
72
41
59
40
78
72
55
64
60
71
54
42
75
53
70
(i)
Marks
40 - 46
46 - 52
52 - 58
58 - 64
64 - 70
70 - 76
76 - 82
No. of Students
4
1
3
6
2
5
1
(ii)
Marks
40 - 46
46 - 52
52 - 58
58 - 64
64 - 70
70 - 76
76 - 82
No. of Students
4
3
1
2
2
5
1
(iii)
Marks
40 - 46
46 - 52
52 - 58
58 - 64
64 - 70
70 - 76
76 - 82
No. of Students
4
1
8
2
2
5
1
(iv)
Marks
40 - 46
46 - 52
52 - 58
58 - 64
64 - 70
70 - 76
76 - 82
No. of Students
4
1
3
2
2
5
1
Question
4
4.
Construct a frequency table
in exclusive form
for the following
ages (in years) of
18
students, taking class size
2
.
18
17
23
22
23
17
17
20
25
18
19
25
25
15
24
24
15
21
(i)
Age (in years)
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
2
5
2
4
3
(ii)
Age (in years)
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
3
2
2
4
5
(iii)
Age (in years)
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
5
2
2
4
3
(iv)
Age (in years)
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
5
2
5
4
3
(v)
Age (in years)
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
5
7
2
4
3
Question
5
5.
The daily wages (in rupees) of
19
workers in a factory are given below.
Represent the data in the form of a frequency distribution
in inclusive form
taking class size
30
.
269
290
251
276
250
223
225
215
292
200
229
280
204
271
215
251
281
260
246
(i)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
7
2
6
2
(ii)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
7
6
4
2
(iii)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
7
4
11
2
(iv)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
7
4
6
2
(v)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
2
4
6
7
Question
6
6.
The daily wages (in rupees) of
15
workers in a factory are given below.
Represent the data in the form of a frequency distribution
in exclusive form
taking class size
30
.
274
245
296
293
243
203
230
246
209
213
298
229
295
220
267
(i)
Wages (in rupees)
203 - 233
233 - 263
263 - 293
293 - 323
No. of Workers
6
7
2
4
(ii)
Wages (in rupees)
203 - 233
233 - 263
263 - 293
293 - 323
No. of Workers
6
2
3
4
(iii)
Wages (in rupees)
203 - 233
233 - 263
263 - 293
293 - 323
No. of Workers
6
3
2
4
(iv)
Wages (in rupees)
203 - 233
233 - 263
263 - 293
293 - 323
No. of Workers
4
3
2
6
(v)
Wages (in rupees)
203 - 233
233 - 263
263 - 293
293 - 323
No. of Workers
6
3
7
4
Question
7
7.
The weights (in gm) of
18
fruits are as follows.
Form the grouped frequency table
in inclusive form
by taking class size
50
.
339
241
352
294
206
215
301
396
202
400
332
229
361
268
380
201
208
392
(i)
Weight (in gm)
201 - 250
251 - 300
301 - 350
351 - 400
No. of Fruits
7
7
3
6
(ii)
Weight (in gm)
201 - 250
251 - 300
301 - 350
351 - 400
No. of Fruits
7
3
2
6
(iii)
Weight (in gm)
201 - 250
251 - 300
301 - 350
351 - 400
No. of Fruits
7
2
3
6
(iv)
Weight (in gm)
201 - 250
251 - 300
301 - 350
351 - 400
No. of Fruits
7
2
7
6
(v)
Weight (in gm)
201 - 250
251 - 300
301 - 350
351 - 400
No. of Fruits
6
2
3
7
Question
8
8.
The weights (in gm) of
18
fruits are as follows.
Form the grouped frequency table
in exclusive form
by taking class size
50
.
324
263
212
246
267
331
363
233
383
315
354
260
388
302
303
226
314
371
(i)
Weight (in gm)
212 - 262
262 - 312
312 - 362
362 - 412
No. of Fruits
5
4
5
4
(ii)
Weight (in gm)
212 - 262
262 - 312
312 - 362
362 - 412
No. of Fruits
5
5
4
4
(iii)
Weight (in gm)
212 - 262
262 - 312
312 - 362
362 - 412
No. of Fruits
5
4
8
4
(iv)
Weight (in gm)
212 - 262
262 - 312
312 - 362
362 - 412
No. of Fruits
5
1
5
4
(v)
Weight (in gm)
212 - 262
262 - 312
312 - 362
362 - 412
No. of Fruits
4
4
5
5
Question
9
9.
Given the sample data, prepare the class interval table in
inclusive
form with
2
as min value and a class size of
10
.
23
2
47
37
26
13
11
29
3
2
29
9
50
14
29
30
30
27
12
28
(i)
Class-Interval
2 - 12
12 - 22
22 - 32
32 - 42
42 - 52
Frequency
5
3
9
1
2
(ii)
Class-Interval
2 - 11
12 - 21
22 - 31
32 - 41
42 - 51
Frequency
5
3
9
1
2
(iii)
Class-Interval
2 - 11
12 - 21
22 - 31
32 - 41
42 - 51
Frequency
5
9
3
1
2
(iv)
Class-Interval
2 - 11
12 - 21
22 - 31
32 - 41
42 - 51
Frequency
5
2
9
1
3
(v)
Class-Interval
2 - 11
12 - 21
22 - 31
32 - 41
42 - 51
Frequency
5
6
9
1
2
Question
10
10.
Given the sample data, prepare the class interval table in
exclusive
form with
1
as min value and a class size of
5
.
27
46
38
1
29
18
29
2
1
8
36
15
33
31
16
19
24
18
(i)
Class-Interval
1 - 6
6 - 11
11 - 16
16 - 21
21 - 26
26 - 31
31 - 36
36 - 41
41 - 46
46 - 51
Frequency
3
1
1
2
1
3
2
2
0
1
(ii)
Class-Interval
1 - 6
6 - 11
11 - 16
16 - 21
21 - 26
26 - 31
31 - 36
36 - 41
41 - 46
46 - 51
Frequency
3
1
4
1
1
3
2
2
0
1
(iii)
Class-Interval
1 - 6
6 - 11
11 - 16
16 - 21
21 - 26
26 - 31
31 - 36
36 - 41
41 - 46
46 - 51
Frequency
3
1
1
4
1
3
2
2
0
1
(iv)
Class-Interval
1 - 5
6 - 10
11 - 15
16 - 20
21 - 25
26 - 30
31 - 35
36 - 40
41 - 45
46 - 50
Frequency
3
1
1
4
1
3
2
2
0
1
Assignment Key
1) (i)
2) (ii)
3) (iv)
4) (iii)
5) (iv)
6) (iii)
7) (iii)
8) (i)
9) (ii)
10) (iii)
