EduSahara™ Assignment
Name : Constructing Class Interval Tables
Chapter : Statistics
Grade : CBSE Grade IX
License : Non Commercial Use
Question
1
1.
The marks obtained by
16
students in an examination are given below.
Represent the data in the form of a frequency distribution table
in inclusive form
taking class size
8
.
79
45
54
64
63
62
57
54
45
66
79
77
79
78
73
40
(i)
Marks
40 - 47
48 - 55
56 - 63
64 - 71
72 - 79
No. of Students
3
6
3
2
2
(ii)
Marks
40 - 47
48 - 55
56 - 63
64 - 71
72 - 79
No. of Students
3
3
2
2
6
(iii)
Marks
40 - 47
48 - 55
56 - 63
64 - 71
72 - 79
No. of Students
3
2
8
2
6
(iv)
Marks
40 - 47
48 - 55
56 - 63
64 - 71
72 - 79
No. of Students
3
5
3
2
6
(v)
Marks
40 - 47
48 - 55
56 - 63
64 - 71
72 - 79
No. of Students
3
2
3
2
6
Question
2
2.
The marks obtained by
15
students in an examination are given below.
Represent the data in the form of a frequency distribution table
in exclusive form
taking class size
5
.
52
79
57
57
43
73
43
75
41
49
49
67
78
69
65
(i)
Marks
41 - 46
46 - 51
51 - 56
56 - 61
61 - 66
66 - 71
71 - 76
76 - 81
No. of Students
3
2
1
2
1
2
2
2
(ii)
Marks
41 - 46
46 - 51
51 - 56
56 - 61
61 - 66
66 - 71
71 - 76
76 - 81
No. of Students
3
2
2
1
1
2
2
2
(iii)
Marks
41 - 46
46 - 51
51 - 56
56 - 61
61 - 66
66 - 71
71 - 76
76 - 81
No. of Students
3
2
3
2
1
2
2
2
(iv)
Marks
41 - 46
46 - 51
51 - 56
56 - 61
61 - 66
66 - 71
71 - 76
76 - 81
No. of Students
3
2
1
2
5
2
2
2
Question
3
3.
The marks obtained by
19
students in an examination are given below.
Represent the data in the form of a frequency distribution table
in exclusive form
taking class size
5
.
44
79
75
40
72
46
56
67
74
66
56
47
69
62
67
63
72
54
50
(i)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
No. of Students
2
2
2
2
2
4
3
2
(ii)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
No. of Students
2
2
2
2
5
4
3
2
(iii)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
No. of Students
2
2
7
2
2
4
3
2
Question
4
4.
Construct a frequency table
in exclusive form
for the following
ages (in years) of
15
students, taking class size
2
.
22
20
17
11
13
11
16
22
24
18
23
24
17
13
18
(i)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
No. of Students
2
2
1
4
1
2
3
(ii)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
No. of Students
2
3
1
4
1
2
2
(iii)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
No. of Students
2
2
1
7
1
2
3
(iv)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
No. of Students
2
1
2
4
1
2
3
(v)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
No. of Students
2
2
4
4
1
2
3
Question
5
5.
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 inclusive form
taking class size
30
.
264
274
269
285
232
297
234
238
212
274
241
266
271
296
220
(i)
Wages (in rupees)
212 - 241
242 - 271
272 - 301
No. of Workers
6
2
5
(ii)
Wages (in rupees)
212 - 241
242 - 271
272 - 301
No. of Workers
6
4
5
(iii)
Wages (in rupees)
212 - 241
242 - 271
272 - 301
No. of Workers
5
4
6
(iv)
Wages (in rupees)
212 - 241
242 - 271
272 - 301
No. of Workers
4
6
5
(v)
Wages (in rupees)
212 - 241
242 - 271
272 - 301
No. of Workers
6
1
5
Question
6
6.
The daily wages (in rupees) of
18
workers in a factory are given below.
Represent the data in the form of a frequency distribution
in exclusive form
taking class size
20
.
264
224
275
238
214
281
246
290
266
248
265
256
278
247
228
233
241
293
(i)
Wages (in rupees)
214 - 234
234 - 254
254 - 274
274 - 294
No. of Workers
4
4
5
5
(ii)
Wages (in rupees)
214 - 234
234 - 254
254 - 274
274 - 294
No. of Workers
5
5
4
4
(iii)
Wages (in rupees)
214 - 234
234 - 254
254 - 274
274 - 294
No. of Workers
4
5
9
5
(iv)
Wages (in rupees)
214 - 234
234 - 254
254 - 274
274 - 294
No. of Workers
4
10
4
5
(v)
Wages (in rupees)
214 - 234
234 - 254
254 - 274
274 - 294
No. of Workers
4
5
4
5
Question
7
7.
The weights (in gm) of
17
fruits are as follows.
Form the grouped frequency table
in inclusive form
by taking class size
40
.
392
200
274
291
345
376
253
364
248
383
230
342
271
391
246
334
284
(i)
Weight (in gm)
200 - 239
240 - 279
280 - 319
320 - 359
360 - 399
No. of Fruits
2
5
2
3
5
(ii)
Weight (in gm)
200 - 239
240 - 279
280 - 319
320 - 359
360 - 399
No. of Fruits
2
5
7
3
5
(iii)
Weight (in gm)
200 - 239
240 - 279
280 - 319
320 - 359
360 - 399
No. of Fruits
2
1
2
3
5
(iv)
Weight (in gm)
200 - 239
240 - 279
280 - 319
320 - 359
360 - 399
No. of Fruits
2
2
5
3
5
Question
8
8.
The weights (in gm) of
19
fruits are as follows.
Form the grouped frequency table
in exclusive form
by taking class size
50
.
395
380
221
259
312
392
268
204
212
260
389
208
387
257
338
380
274
225
212
(i)
Weight (in gm)
204 - 254
254 - 304
304 - 354
354 - 404
No. of Fruits
6
5
6
6
(ii)
Weight (in gm)
204 - 254
254 - 304
304 - 354
354 - 404
No. of Fruits
6
10
2
6
(iii)
Weight (in gm)
204 - 254
254 - 304
304 - 354
354 - 404
No. of Fruits
6
2
5
6
(iv)
Weight (in gm)
204 - 254
254 - 304
304 - 354
354 - 404
No. of Fruits
6
5
2
6
Question
9
9.
Given the sample data, prepare the class interval table in
inclusive
form with
7
as min value and a class size of
10
.
48
7
10
34
44
49
36
28
33
35
25
31
30
34
24
(i)
Class-Interval
7 - 17
17 - 27
27 - 37
37 - 47
47 - 57
Frequency
2
2
8
1
2
(ii)
Class-Interval
7 - 16
17 - 26
27 - 36
37 - 46
47 - 56
Frequency
2
2
8
1
2
(iii)
Class-Interval
7 - 16
17 - 26
27 - 36
37 - 46
47 - 56
Frequency
2
4
8
1
2
(iv)
Class-Interval
7 - 16
17 - 26
27 - 36
37 - 46
47 - 56
Frequency
2
8
2
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
10
.
24
45
8
1
13
25
13
24
21
19
20
29
47
15
46
45
9
18
3
(i)
Class-Interval
1 - 11
11 - 21
21 - 31
31 - 41
41 - 51
Frequency
4
5
6
0
4
(ii)
Class-Interval
1 - 11
11 - 21
21 - 31
31 - 41
41 - 51
Frequency
4
6
5
0
4
(iii)
Class-Interval
1 - 11
11 - 21
21 - 31
31 - 41
41 - 51
Frequency
4
4
5
0
6
(iv)
Class-Interval
1 - 10
11 - 20
21 - 30
31 - 40
41 - 50
Frequency
4
6
5
0
4
(v)
Class-Interval
1 - 11
11 - 21
21 - 31
31 - 41
41 - 51
Frequency
4
2
5
0
4
Assignment Key
1) (v)
2) (i)
3) (i)
4) (i)
5) (ii)
6) (v)
7) (i)
8) (iv)
9) (ii)
10) (ii)
