EduSahara™ Assignment
Name : Constructing Class Interval Tables
Chapter : Statistics
Grade : ICSE Grade VIII
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
6
.
80
50
73
47
66
44
80
69
53
74
62
56
80
65
62
58
40
57
(i)
Marks
40 - 45
46 - 51
52 - 57
58 - 63
64 - 69
70 - 75
76 - 81
No. of Students
2
2
6
3
3
2
3
(ii)
Marks
40 - 45
46 - 51
52 - 57
58 - 63
64 - 69
70 - 75
76 - 81
No. of Students
2
2
3
3
3
2
3
(iii)
Marks
40 - 45
46 - 51
52 - 57
58 - 63
64 - 69
70 - 75
76 - 81
No. of Students
2
3
2
3
3
2
3
(iv)
Marks
40 - 45
46 - 51
52 - 57
58 - 63
64 - 69
70 - 75
76 - 81
No. of Students
2
3
3
3
3
2
2
(v)
Marks
40 - 45
46 - 51
52 - 57
58 - 63
64 - 69
70 - 75
76 - 81
No. of Students
2
2
3
8
3
2
3
Question
2
2.
The marks obtained by
16
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
.
53
78
59
68
65
62
66
48
70
64
58
67
57
72
70
60
(i)
Marks
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
2
7
5
2
(ii)
Marks
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
2
2
7
2
(iii)
Marks
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
2
5
7
2
(iv)
Marks
48 - 56
56 - 64
64 - 72
72 - 80
No. of Students
2
5
11
2
Question
3
3.
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
7
.
47
80
41
52
47
75
80
77
58
58
76
74
65
72
60
(i)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
3
3
1
1
3
4
(ii)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
3
1
3
3
3
4
(iii)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
3
4
3
1
3
1
(iv)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
3
1
3
1
3
4
(v)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
3
1
6
1
3
4
Question
4
4.
Construct a frequency table
in exclusive form
for the following
ages (in years) of
17
students, taking class size
3
.
25
18
11
18
13
11
20
10
23
12
18
12
18
14
18
17
24
(i)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
5
2
6
1
2
1
(ii)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
5
2
6
3
2
1
(iii)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
5
6
2
1
2
1
(iv)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
5
2
10
1
2
1
(v)
Age (in years)
10 - 13
13 - 16
16 - 19
19 - 22
22 - 25
25 - 28
No. of Students
5
1
6
1
2
2
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
.
298
236
224
295
238
210
205
283
270
296
222
265
241
207
219
226
272
222
278
(i)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
7
4
0
5
3
(ii)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
7
3
0
5
4
(iii)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
7
4
2
5
3
(iv)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
7
0
4
5
3
(v)
Wages (in rupees)
205 - 224
225 - 244
245 - 264
265 - 284
285 - 304
No. of Workers
7
1
0
5
3
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
.
242
220
229
233
290
267
287
260
215
273
280
220
240
292
293
247
228
(i)
Wages (in rupees)
215 - 245
245 - 275
275 - 305
No. of Workers
8
8
5
(ii)
Wages (in rupees)
215 - 245
245 - 275
275 - 305
No. of Workers
8
4
5
(iii)
Wages (in rupees)
215 - 245
245 - 275
275 - 305
No. of Workers
8
9
5
(iv)
Wages (in rupees)
215 - 245
245 - 275
275 - 305
No. of Workers
4
8
5
(v)
Wages (in rupees)
215 - 245
245 - 275
275 - 305
No. of Workers
5
4
8
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
.
288
378
398
247
343
309
373
303
214
256
218
298
328
357
256
397
208
290
(i)
Weight (in gm)
208 - 257
258 - 307
308 - 357
358 - 407
No. of Fruits
6
4
7
4
(ii)
Weight (in gm)
208 - 257
258 - 307
308 - 357
358 - 407
No. of Fruits
6
1
4
4
(iii)
Weight (in gm)
208 - 257
258 - 307
308 - 357
358 - 407
No. of Fruits
6
4
4
4
(iv)
Weight (in gm)
208 - 257
258 - 307
308 - 357
358 - 407
No. of Fruits
4
4
4
6
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
.
347
295
206
259
210
252
385
321
270
395
275
235
291
284
336
262
300
299
(i)
Weight (in gm)
206 - 256
256 - 306
306 - 356
356 - 406
No. of Fruits
4
3
9
2
(ii)
Weight (in gm)
206 - 256
256 - 306
306 - 356
356 - 406
No. of Fruits
4
9
5
2
(iii)
Weight (in gm)
206 - 256
256 - 306
306 - 356
356 - 406
No. of Fruits
4
9
3
2
(iv)
Weight (in gm)
206 - 256
256 - 306
306 - 356
356 - 406
No. of Fruits
2
9
3
4
(v)
Weight (in gm)
206 - 256
256 - 306
306 - 356
356 - 406
No. of Fruits
4
12
3
2
Question
9
9.
Given the sample data, prepare the class interval table in
inclusive
form with
3
as min value and a class size of
7
.
48
9
34
42
41
43
10
45
45
25
41
3
27
6
21
24
21
16
23
43
(i)
Class-Interval
3 - 9
10 - 16
17 - 23
24 - 30
31 - 37
38 - 44
45 - 51
Frequency
3
2
5
3
1
5
3
(ii)
Class-Interval
3 - 10
10 - 17
17 - 24
24 - 31
31 - 38
38 - 45
45 - 52
Frequency
3
2
3
3
1
5
3
(iii)
Class-Interval
3 - 9
10 - 16
17 - 23
24 - 30
31 - 37
38 - 44
45 - 51
Frequency
3
3
3
3
1
5
2
(iv)
Class-Interval
3 - 9
10 - 16
17 - 23
24 - 30
31 - 37
38 - 44
45 - 51
Frequency
3
2
3
3
1
5
3
(v)
Class-Interval
3 - 9
10 - 16
17 - 23
24 - 30
31 - 37
38 - 44
45 - 51
Frequency
3
3
2
3
1
5
3
Question
10
10.
Given the sample data, prepare the class interval table in
exclusive
form with
5
as min value and a class size of
10
.
43
17
5
23
21
37
9
27
16
37
15
6
32
18
18
30
21
47
28
22
(i)
Class-Interval
5 - 15
15 - 25
25 - 35
35 - 45
45 - 55
Frequency
3
9
4
3
1
(ii)
Class-Interval
5 - 15
15 - 25
25 - 35
35 - 45
45 - 55
Frequency
3
4
9
3
1
(iii)
Class-Interval
5 - 15
15 - 25
25 - 35
35 - 45
45 - 55
Frequency
3
7
4
3
1
(iv)
Class-Interval
5 - 14
15 - 24
25 - 34
35 - 44
45 - 54
Frequency
3
9
4
3
1
(v)
Class-Interval
5 - 15
15 - 25
25 - 35
35 - 45
45 - 55
Frequency
3
1
4
3
9
Assignment Key
1) (ii)
2) (iii)
3) (iv)
4) (i)
5) (i)
6) (ii)
7) (iii)
8) (iii)
9) (iv)
10) (i)
