EduSahara™ Assignment
Name : Constructing Class Interval Tables
Chapter : Statistics
Grade : CBSE Grade IX
License : Non Commercial Use
Question
1
1.
The marks obtained by
18
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
.
47
60
75
77
51
72
55
58
61
58
49
55
72
69
46
60
51
49
(i)
Marks
46 - 53
54 - 61
62 - 69
70 - 77
No. of Students
6
1
7
4
(ii)
Marks
46 - 53
54 - 61
62 - 69
70 - 77
No. of Students
6
2
1
4
(iii)
Marks
46 - 53
54 - 61
62 - 69
70 - 77
No. of Students
4
7
1
6
(iv)
Marks
46 - 53
54 - 61
62 - 69
70 - 77
No. of Students
6
7
4
4
(v)
Marks
46 - 53
54 - 61
62 - 69
70 - 77
No. of Students
6
7
1
4
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
8
.
69
54
45
50
64
43
49
57
54
59
78
71
60
63
62
40
56
71
(i)
Marks
40 - 48
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
3
6
4
4
1
(ii)
Marks
40 - 48
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
3
7
6
4
1
(iii)
Marks
40 - 48
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
3
1
6
4
4
(iv)
Marks
40 - 48
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
3
4
1
4
1
(v)
Marks
40 - 48
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
3
4
6
4
1
Question
3
3.
The marks obtained by
17
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
.
69
42
79
61
41
61
65
70
66
72
53
49
41
41
43
80
79
(i)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
5
2
4
2
3
3
(ii)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
5
2
2
6
3
3
(iii)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
5
2
2
2
3
3
(iv)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
5
3
2
2
3
2
Question
4
4.
Construct a frequency table
in exclusive form
for the following
ages (in years) of
16
students, taking class size
2
.
15
12
23
12
15
21
16
25
20
23
13
18
18
18
22
12
(i)
Age (in years)
12 - 14
14 - 16
16 - 18
18 - 20
20 - 22
22 - 24
24 - 26
No. of Students
4
2
1
8
2
3
1
(ii)
Age (in years)
12 - 14
14 - 16
16 - 18
18 - 20
20 - 22
22 - 24
24 - 26
No. of Students
4
1
2
3
2
3
1
(iii)
Age (in years)
12 - 14
14 - 16
16 - 18
18 - 20
20 - 22
22 - 24
24 - 26
No. of Students
4
2
1
3
2
3
1
(iv)
Age (in years)
12 - 14
14 - 16
16 - 18
18 - 20
20 - 22
22 - 24
24 - 26
No. of Students
4
1
1
3
2
3
2
(v)
Age (in years)
12 - 14
14 - 16
16 - 18
18 - 20
20 - 22
22 - 24
24 - 26
No. of Students
4
2
6
3
2
3
1
Question
5
5.
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 inclusive form
taking class size
30
.
262
225
208
282
245
248
225
200
290
297
249
250
208
229
270
255
221
280
(i)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
7
10
4
2
(ii)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
7
5
6
2
(iii)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
7
5
4
2
(iv)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
2
5
4
7
(v)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
7
4
5
2
Question
6
6.
The daily wages (in rupees) of
17
workers in a factory are given below.
Represent the data in the form of a frequency distribution
in exclusive form
taking class size
30
.
268
215
236
272
284
247
232
295
289
203
215
202
287
265
290
211
253
(i)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
5
4
10
1
(ii)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
1
4
7
5
(iii)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
5
4
7
1
(iv)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
5
7
4
1
(v)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
5
6
7
1
Question
7
7.
The weights (in gm) of
20
fruits are as follows.
Form the grouped frequency table
in inclusive form
by taking class size
40
.
205
304
301
218
261
400
394
354
236
220
315
261
345
317
215
325
254
283
392
243
(i)
Weight (in gm)
205 - 244
245 - 284
285 - 324
325 - 364
365 - 404
No. of Fruits
6
9
4
3
3
(ii)
Weight (in gm)
205 - 244
245 - 284
285 - 324
325 - 364
365 - 404
No. of Fruits
6
3
4
3
4
(iii)
Weight (in gm)
205 - 244
245 - 284
285 - 324
325 - 364
365 - 404
No. of Fruits
6
4
4
3
3
(iv)
Weight (in gm)
205 - 244
245 - 284
285 - 324
325 - 364
365 - 404
No. of Fruits
6
4
1
3
3
Question
8
8.
The weights (in gm) of
17
fruits are as follows.
Form the grouped frequency table
in exclusive form
by taking class size
40
.
213
206
305
256
318
209
328
309
236
359
354
373
255
309
290
288
245
(i)
Weight (in gm)
206 - 246
246 - 286
286 - 326
326 - 366
366 - 406
No. of Fruits
5
2
6
3
1
(ii)
Weight (in gm)
206 - 246
246 - 286
286 - 326
326 - 366
366 - 406
No. of Fruits
5
2
4
3
1
(iii)
Weight (in gm)
206 - 246
246 - 286
286 - 326
326 - 366
366 - 406
No. of Fruits
5
1
6
3
2
(iv)
Weight (in gm)
206 - 246
246 - 286
286 - 326
326 - 366
366 - 406
No. of Fruits
5
6
2
3
1
(v)
Weight (in gm)
206 - 246
246 - 286
286 - 326
326 - 366
366 - 406
No. of Fruits
5
7
6
3
1
Question
9
9.
Given the sample data, prepare the class interval table in
inclusive
form with
5
as min value and a class size of
6
.
22
14
16
6
14
19
10
6
46
8
42
46
21
29
17
8
5
26
(i)
Class-Interval
5 - 10
11 - 16
17 - 22
23 - 28
29 - 34
35 - 40
41 - 46
Frequency
6
4
3
1
1
0
3
(ii)
Class-Interval
5 - 10
11 - 16
17 - 22
23 - 28
29 - 34
35 - 40
41 - 46
Frequency
6
3
4
1
1
0
3
(iii)
Class-Interval
5 - 10
11 - 16
17 - 22
23 - 28
29 - 34
35 - 40
41 - 46
Frequency
6
3
9
1
1
0
3
(iv)
Class-Interval
5 - 11
11 - 17
17 - 23
23 - 29
29 - 35
35 - 41
41 - 47
Frequency
6
3
4
1
1
0
3
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
6
.
33
27
11
19
2
10
1
38
32
14
11
49
35
13
28
11
(i)
Class-Interval
1 - 7
7 - 13
13 - 19
19 - 25
25 - 31
31 - 37
37 - 43
43 - 49
49 - 55
Frequency
2
4
2
6
2
3
1
0
1
(ii)
Class-Interval
1 - 7
7 - 13
13 - 19
19 - 25
25 - 31
31 - 37
37 - 43
43 - 49
49 - 55
Frequency
2
1
2
1
2
3
1
0
4
(iii)
Class-Interval
1 - 7
7 - 13
13 - 19
19 - 25
25 - 31
31 - 37
37 - 43
43 - 49
49 - 55
Frequency
2
4
1
2
2
3
1
0
1
(iv)
Class-Interval
1 - 7
7 - 13
13 - 19
19 - 25
25 - 31
31 - 37
37 - 43
43 - 49
49 - 55
Frequency
2
4
2
1
2
3
1
0
1
(v)
Class-Interval
1 - 6
7 - 12
13 - 18
19 - 24
25 - 30
31 - 36
37 - 42
43 - 48
49 - 54
Frequency
2
4
2
1
2
3
1
0
1
Assignment Key
1) (v)
2) (v)
3) (iii)
4) (iii)
5) (iii)
6) (iii)
7) (iii)
8) (i)
9) (ii)
10) (iv)
