EduSahara™ Assignment
Name : Constructing Class Interval Tables
Chapter : Statistics
Grade : CBSE Grade IX
License : Non Commercial Use
Question
1
1.
The marks obtained by
19
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
.
48
63
78
68
71
79
52
52
65
42
76
50
62
71
48
41
54
70
48
(i)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
5
4
2
5
3
(ii)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
5
6
2
5
3
(iii)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
5
2
4
5
3
(iv)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
5
4
6
5
3
(v)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
5
3
2
5
4
Question
2
2.
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
6
.
75
47
45
63
56
68
75
73
77
77
74
60
43
56
77
71
73
48
43
(i)
Marks
43 - 49
49 - 55
55 - 61
61 - 67
67 - 73
73 - 79
No. of Students
5
0
3
4
2
8
(ii)
Marks
43 - 49
49 - 55
55 - 61
61 - 67
67 - 73
73 - 79
No. of Students
5
0
3
1
2
8
(iii)
Marks
43 - 49
49 - 55
55 - 61
61 - 67
67 - 73
73 - 79
No. of Students
5
0
6
1
2
8
(iv)
Marks
43 - 49
49 - 55
55 - 61
61 - 67
67 - 73
73 - 79
No. of Students
5
3
0
1
2
8
(v)
Marks
43 - 49
49 - 55
55 - 61
61 - 67
67 - 73
73 - 79
No. of Students
5
8
3
1
2
0
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
.
59
77
79
46
45
44
80
58
58
76
65
62
58
67
58
58
40
62
46
(i)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
80 - 85
No. of Students
2
3
0
2
2
2
0
3
1
(ii)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
80 - 85
No. of Students
2
1
0
6
2
2
0
3
3
(iii)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
80 - 85
No. of Students
2
3
6
0
2
2
0
3
1
(iv)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
80 - 85
No. of Students
2
3
0
6
7
2
0
3
1
(v)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
80 - 85
No. of Students
2
3
0
6
2
2
0
3
1
Question
4
4.
Construct a frequency table
in exclusive form
for the following
ages (in years) of
15
students, taking class size
3
.
10
17
22
17
21
10
11
17
25
11
13
13
12
11
17
(i)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
6
1
4
1
1
2
(ii)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
6
2
4
1
1
1
(iii)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
6
4
2
1
1
1
(iv)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
6
2
8
1
1
1
(v)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
6
2
4
6
1
1
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
20
.
291
276
220
295
205
212
272
300
262
261
223
279
232
209
255
299
299
240
299
(i)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
5
2
8
3
6
(ii)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
5
7
3
3
6
(iii)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
5
6
3
3
2
(iv)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
5
2
3
3
6
(v)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
5
3
2
3
6
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
30
.
224
236
267
225
222
278
248
291
214
211
281
240
228
296
220
251
246
248
(i)
Wages (in rupees)
211 - 241
241 - 271
271 - 301
No. of Workers
9
5
4
(ii)
Wages (in rupees)
211 - 241
241 - 271
271 - 301
No. of Workers
5
9
4
(iii)
Wages (in rupees)
211 - 241
241 - 271
271 - 301
No. of Workers
4
5
9
(iv)
Wages (in rupees)
211 - 241
241 - 271
271 - 301
No. of Workers
9
3
4
Question
7
7.
The weights (in gm) of
19
fruits are as follows.
Form the grouped frequency table
in inclusive form
by taking class size
40
.
310
358
349
213
275
289
233
267
255
216
278
312
308
205
223
225
378
222
355
(i)
Weight (in gm)
205 - 244
245 - 284
285 - 324
325 - 364
365 - 404
No. of Fruits
7
8
4
3
1
(ii)
Weight (in gm)
205 - 244
245 - 284
285 - 324
325 - 364
365 - 404
No. of Fruits
7
4
4
3
1
(iii)
Weight (in gm)
205 - 244
245 - 284
285 - 324
325 - 364
365 - 404
No. of Fruits
7
1
4
3
4
(iv)
Weight (in gm)
205 - 244
245 - 284
285 - 324
325 - 364
365 - 404
No. of Fruits
7
4
9
3
1
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
.
326
312
313
237
285
228
292
280
352
235
399
361
317
374
226
345
254
370
(i)
Weight (in gm)
226 - 276
276 - 326
326 - 376
376 - 426
No. of Fruits
5
6
10
1
(ii)
Weight (in gm)
226 - 276
276 - 326
326 - 376
376 - 426
No. of Fruits
1
6
6
5
(iii)
Weight (in gm)
226 - 276
276 - 326
326 - 376
376 - 426
No. of Fruits
5
6
6
1
(iv)
Weight (in gm)
226 - 276
276 - 326
326 - 376
376 - 426
No. of Fruits
5
11
6
1
Question
9
9.
Given the sample data, prepare the class interval table in
inclusive
form with
1
as min value and a class size of
6
.
48
38
50
16
19
7
8
5
14
14
39
1
40
38
34
17
(i)
Class-Interval
1 - 6
7 - 12
13 - 18
19 - 24
25 - 30
31 - 36
37 - 42
43 - 48
49 - 54
Frequency
2
2
4
6
0
1
4
1
1
(ii)
Class-Interval
1 - 6
7 - 12
13 - 18
19 - 24
25 - 30
31 - 36
37 - 42
43 - 48
49 - 54
Frequency
2
1
4
1
0
1
4
1
2
(iii)
Class-Interval
1 - 6
7 - 12
13 - 18
19 - 24
25 - 30
31 - 36
37 - 42
43 - 48
49 - 54
Frequency
2
2
1
4
0
1
4
1
1
(iv)
Class-Interval
1 - 7
7 - 13
13 - 19
19 - 25
25 - 31
31 - 37
37 - 43
43 - 49
49 - 55
Frequency
2
2
4
1
0
1
4
1
1
(v)
Class-Interval
1 - 6
7 - 12
13 - 18
19 - 24
25 - 30
31 - 36
37 - 42
43 - 48
49 - 54
Frequency
2
2
4
1
0
1
4
1
1
Question
10
10.
Given the sample data, prepare the class interval table in
exclusive
form with
4
as min value and a class size of
8
.
4
7
40
31
36
49
13
7
40
28
49
44
45
46
25
6
5
(i)
Class-Interval
4 - 12
12 - 20
20 - 28
28 - 36
36 - 44
44 - 52
Frequency
5
1
1
2
3
5
(ii)
Class-Interval
4 - 12
12 - 20
20 - 28
28 - 36
36 - 44
44 - 52
Frequency
5
5
1
2
3
1
(iii)
Class-Interval
4 - 12
12 - 20
20 - 28
28 - 36
36 - 44
44 - 52
Frequency
5
1
6
2
3
5
(iv)
Class-Interval
4 - 11
12 - 19
20 - 27
28 - 35
36 - 43
44 - 51
Frequency
5
1
1
2
3
5
Assignment Key
1) (i)
2) (ii)
3) (v)
4) (ii)
5) (iv)
6) (i)
7) (ii)
8) (iii)
9) (v)
10) (i)
