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
5
.
62
56
50
43
78
51
52
46
57
46
56
44
61
55
69
57
49
(i)
Marks
43 - 47
48 - 52
53 - 57
58 - 62
63 - 67
68 - 72
73 - 77
78 - 82
No. of Students
4
4
1
2
0
1
0
1
(ii)
Marks
43 - 47
48 - 52
53 - 57
58 - 62
63 - 67
68 - 72
73 - 77
78 - 82
No. of Students
4
4
5
2
2
1
0
1
(iii)
Marks
43 - 47
48 - 52
53 - 57
58 - 62
63 - 67
68 - 72
73 - 77
78 - 82
No. of Students
4
1
5
2
0
1
0
4
(iv)
Marks
43 - 47
48 - 52
53 - 57
58 - 62
63 - 67
68 - 72
73 - 77
78 - 82
No. of Students
4
4
5
2
0
1
0
1
(v)
Marks
43 - 47
48 - 52
53 - 57
58 - 62
63 - 67
68 - 72
73 - 77
78 - 82
No. of Students
4
4
2
5
0
1
0
1
Question
2
2.
The marks obtained by
20
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
.
67
80
43
76
46
47
65
59
64
51
77
57
49
48
65
68
80
41
61
73
(i)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
3
3
9
1
4
(ii)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
3
3
5
1
4
(iii)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
3
1
5
1
4
(iv)
Marks
41 - 48
48 - 55
55 - 62
62 - 69
69 - 76
76 - 83
No. of Students
4
4
3
5
1
3
Question
3
3.
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
6
.
50
64
78
77
50
59
68
44
77
44
55
79
66
70
70
76
(i)
Marks
44 - 50
50 - 56
56 - 62
62 - 68
68 - 74
74 - 80
No. of Students
2
3
5
2
3
5
(ii)
Marks
44 - 50
50 - 56
56 - 62
62 - 68
68 - 74
74 - 80
No. of Students
2
5
1
2
3
3
(iii)
Marks
44 - 50
50 - 56
56 - 62
62 - 68
68 - 74
74 - 80
No. of Students
2
1
3
2
3
5
(iv)
Marks
44 - 50
50 - 56
56 - 62
62 - 68
68 - 74
74 - 80
No. of Students
2
3
1
2
3
5
(v)
Marks
44 - 50
50 - 56
56 - 62
62 - 68
68 - 74
74 - 80
No. of Students
2
3
1
6
3
5
Question
4
4.
Construct a frequency table
in exclusive form
for the following
ages (in years) of
15
students, taking class size
2
.
12
15
23
14
19
15
11
13
13
25
14
18
19
16
18
(i)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
4
3
2
2
0
1
1
(ii)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
4
3
2
6
0
1
1
(iii)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
4
2
3
2
0
1
1
(iv)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
1
3
2
2
0
1
4
(v)
Age (in years)
11 - 13
13 - 15
15 - 17
17 - 19
19 - 21
21 - 23
23 - 25
25 - 27
No. of Students
2
4
7
2
2
0
1
1
Question
5
5.
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 inclusive form
taking class size
30
.
241
217
200
240
252
229
264
200
200
236
270
257
252
297
200
263
255
(i)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
6
3
7
1
(ii)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
6
5
3
1
(iii)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
6
7
3
1
(iv)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
6
7
7
1
(v)
Wages (in rupees)
200 - 229
230 - 259
260 - 289
290 - 319
No. of Workers
1
7
3
6
Question
6
6.
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 exclusive form
taking class size
30
.
282
245
283
260
229
291
280
262
298
202
270
229
280
296
267
(i)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
3
8
2
2
(ii)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
3
2
12
2
(iii)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
3
6
8
2
(iv)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
2
2
8
3
(v)
Wages (in rupees)
202 - 232
232 - 262
262 - 292
292 - 322
No. of Workers
3
2
8
2
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
50
.
211
323
363
348
338
313
234
269
386
329
304
399
248
285
295
226
251
230
248
(i)
Weight (in gm)
211 - 260
261 - 310
311 - 360
361 - 410
No. of Fruits
7
5
4
3
(ii)
Weight (in gm)
211 - 260
261 - 310
311 - 360
361 - 410
No. of Fruits
7
4
3
3
(iii)
Weight (in gm)
211 - 260
261 - 310
311 - 360
361 - 410
No. of Fruits
7
4
5
3
(iv)
Weight (in gm)
211 - 260
261 - 310
311 - 360
361 - 410
No. of Fruits
3
4
5
7
(v)
Weight (in gm)
211 - 260
261 - 310
311 - 360
361 - 410
No. of Fruits
7
9
5
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
.
379
357
249
356
282
275
237
242
397
208
364
266
373
255
232
229
371
(i)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
5
4
0
3
5
(ii)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
5
5
2
3
4
(iii)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
5
0
5
3
4
(iv)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
5
5
0
3
4
(v)
Weight (in gm)
208 - 248
248 - 288
288 - 328
328 - 368
368 - 408
No. of Fruits
5
9
0
3
4
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
9
.
34
11
9
14
30
10
41
36
6
16
36
45
37
3
6
25
13
(i)
Class-Interval
3 - 11
12 - 20
21 - 29
30 - 38
39 - 47
Frequency
6
3
1
5
2
(ii)
Class-Interval
3 - 11
12 - 20
21 - 29
30 - 38
39 - 47
Frequency
6
1
3
5
2
(iii)
Class-Interval
3 - 12
12 - 21
21 - 30
30 - 39
39 - 48
Frequency
6
3
1
5
2
(iv)
Class-Interval
3 - 11
12 - 20
21 - 29
30 - 38
39 - 47
Frequency
6
7
1
5
2
(v)
Class-Interval
3 - 11
12 - 20
21 - 29
30 - 38
39 - 47
Frequency
6
2
1
5
3
Question
10
10.
Given the sample data, prepare the class interval table in
exclusive
form with
3
as min value and a class size of
10
.
22
46
10
35
6
10
6
3
30
10
37
49
23
16
11
(i)
Class-Interval
3 - 13
13 - 23
23 - 33
33 - 43
43 - 53
Frequency
7
2
2
2
2
(ii)
Class-Interval
3 - 13
13 - 23
23 - 33
33 - 43
43 - 53
Frequency
7
6
2
2
2
(iii)
Class-Interval
3 - 12
13 - 22
23 - 32
33 - 42
43 - 52
Frequency
7
2
2
2
2
Assignment Key
1) (iv)
2) (ii)
3) (iv)
4) (i)
5) (iii)
6) (v)
7) (iii)
8) (iv)
9) (i)
10) (i)
