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
8
.
41
57
42
42
47
49
73
75
52
44
56
49
76
73
44
61
47
(i)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
7
4
6
0
4
(ii)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
7
4
2
0
4
(iii)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
7
9
2
0
4
(iv)
Marks
41 - 48
49 - 56
57 - 64
65 - 72
73 - 80
No. of Students
7
2
4
0
4
Question
2
2.
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
5
.
73
75
52
50
59
61
67
47
40
61
43
54
55
66
66
68
75
(i)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
No. of Students
2
1
3
2
2
4
1
2
(ii)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
No. of Students
2
1
2
3
2
4
1
2
(iii)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
No. of Students
2
1
8
2
2
4
1
2
(iv)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
No. of Students
2
1
3
2
7
4
1
2
(v)
Marks
40 - 45
45 - 50
50 - 55
55 - 60
60 - 65
65 - 70
70 - 75
75 - 80
No. of Students
2
2
3
2
2
4
1
1
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
8
.
48
80
45
60
75
59
73
74
58
68
60
68
54
58
54
77
67
53
44
(i)
Marks
44 - 52
52 - 60
60 - 68
68 - 76
76 - 84
No. of Students
3
3
6
5
2
(ii)
Marks
44 - 52
52 - 60
60 - 68
68 - 76
76 - 84
No. of Students
3
6
6
5
2
(iii)
Marks
44 - 52
52 - 60
60 - 68
68 - 76
76 - 84
No. of Students
3
2
3
5
6
(iv)
Marks
44 - 52
52 - 60
60 - 68
68 - 76
76 - 84
No. of Students
3
6
3
5
2
(v)
Marks
44 - 52
52 - 60
60 - 68
68 - 76
76 - 84
No. of Students
3
11
3
5
2
Question
4
4.
Construct a frequency table
in exclusive form
for the following
ages (in years) of
15
students, taking class size
4
.
13
24
18
25
13
19
19
16
16
15
22
14
19
11
25
(i)
Age (in years)
11 - 15
15 - 19
19 - 23
23 - 27
No. of Students
4
4
8
3
(ii)
Age (in years)
11 - 15
15 - 19
19 - 23
23 - 27
No. of Students
4
4
4
3
(iii)
Age (in years)
11 - 15
15 - 19
19 - 23
23 - 27
No. of Students
3
4
4
4
(iv)
Age (in years)
11 - 15
15 - 19
19 - 23
23 - 27
No. of Students
4
7
4
3
Question
5
5.
The daily wages (in rupees) of
20
workers in a factory are given below.
Represent the data in the form of a frequency distribution
in inclusive form
taking class size
30
.
201
290
269
289
204
200
219
218
230
287
228
240
250
274
227
212
297
269
203
279
(i)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
2
3
6
9
(ii)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
9
6
3
2
(iii)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
9
3
10
2
(iv)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
9
1
6
2
(v)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
9
3
6
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
.
285
282
200
260
279
291
288
295
204
279
269
269
205
251
201
257
237
(i)
Wages (in rupees)
200 - 230
230 - 260
260 - 290
290 - 320
No. of Workers
4
6
8
2
(ii)
Wages (in rupees)
200 - 230
230 - 260
260 - 290
290 - 320
No. of Workers
4
3
3
2
(iii)
Wages (in rupees)
200 - 230
230 - 260
260 - 290
290 - 320
No. of Workers
4
3
8
2
(iv)
Wages (in rupees)
200 - 230
230 - 260
260 - 290
290 - 320
No. of Workers
4
8
3
2
(v)
Wages (in rupees)
200 - 230
230 - 260
260 - 290
290 - 320
No. of Workers
2
3
8
4
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
50
.
234
354
274
364
300
220
384
263
303
385
231
233
203
225
338
245
296
400
262
330
(i)
Weight (in gm)
203 - 252
253 - 302
303 - 352
353 - 402
No. of Fruits
7
10
3
5
(ii)
Weight (in gm)
203 - 252
253 - 302
303 - 352
353 - 402
No. of Fruits
7
3
5
5
(iii)
Weight (in gm)
203 - 252
253 - 302
303 - 352
353 - 402
No. of Fruits
7
5
7
5
(iv)
Weight (in gm)
203 - 252
253 - 302
303 - 352
353 - 402
No. of Fruits
5
5
3
7
(v)
Weight (in gm)
203 - 252
253 - 302
303 - 352
353 - 402
No. of Fruits
7
5
3
5
Question
8
8.
The weights (in gm) of
15
fruits are as follows.
Form the grouped frequency table
in exclusive form
by taking class size
40
.
281
216
356
208
242
319
253
214
220
208
372
327
276
294
313
(i)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
6
5
4
1
1
(ii)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
6
4
3
1
1
(iii)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
6
3
4
1
1
(iv)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
6
1
4
1
3
(v)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
6
3
9
1
1
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
.
44
29
48
35
47
2
47
39
45
25
5
8
5
40
30
11
32
11
(i)
Class-Interval
2 - 11
12 - 21
22 - 31
32 - 41
42 - 51
Frequency
6
0
3
4
5
(ii)
Class-Interval
2 - 12
12 - 22
22 - 32
32 - 42
42 - 52
Frequency
6
0
3
4
5
(iii)
Class-Interval
2 - 11
12 - 21
22 - 31
32 - 41
42 - 51
Frequency
6
5
3
4
0
(iv)
Class-Interval
2 - 11
12 - 21
22 - 31
32 - 41
42 - 51
Frequency
6
5
3
4
5
(v)
Class-Interval
2 - 11
12 - 21
22 - 31
32 - 41
42 - 51
Frequency
6
3
0
4
5
Question
10
10.
Given the sample data, prepare the class interval table in
exclusive
form with
2
as min value and a class size of
7
.
43
39
16
46
43
4
2
34
38
13
38
25
37
44
14
15
(i)
Class-Interval
2 - 9
9 - 16
16 - 23
23 - 30
30 - 37
37 - 44
44 - 51
Frequency
2
3
6
1
1
6
2
(ii)
Class-Interval
2 - 9
9 - 16
16 - 23
23 - 30
30 - 37
37 - 44
44 - 51
Frequency
2
3
1
1
1
6
2
(iii)
Class-Interval
2 - 8
9 - 15
16 - 22
23 - 29
30 - 36
37 - 43
44 - 50
Frequency
2
3
1
1
1
6
2
(iv)
Class-Interval
2 - 9
9 - 16
16 - 23
23 - 30
30 - 37
37 - 44
44 - 51
Frequency
2
1
3
1
1
6
2
(v)
Class-Interval
2 - 9
9 - 16
16 - 23
23 - 30
30 - 37
37 - 44
44 - 51
Frequency
2
2
1
1
1
6
3
Assignment Key
1) (ii)
2) (i)
3) (iv)
4) (ii)
5) (v)
6) (iii)
7) (v)
8) (iii)
9) (i)
10) (ii)
