05-20-2014, 12:28 AM
Ans#2
Class limits and there respective frequencies are given. Construct the columns of:
(i) Cumulative Frequency
(ii) Class Boundaries
(iii) Mid Points
Class Limits
Frequency = f
Cumulative Frequency
Class Boundaries
Mid Points
35-39
15
15
34.5-39.5
(35+39)/2=37
40-44
13
15+13=28
39.5-44.5
42
45-49
17
28+17=45
44.5-49.5
47
50-54
28
45+28=73
49.5-54.5
52
55-59
11
73+11=84
54.5-59.5
57
60-64
10
84+10=94
59.5-64.5
62
65-69
5
94+5=99
64.5-69.5
67
Total
99
Class limits and there respective frequencies are given. Construct the columns of:
(i) Cumulative Frequency
(ii) Class Boundaries
(iii) Mid Points
Class Limits
Frequency = f
Cumulative Frequency
Class Boundaries
Mid Points
35-39
15
15
34.5-39.5
(35+39)/2=37
40-44
13
15+13=28
39.5-44.5
42
45-49
17
28+17=45
44.5-49.5
47
50-54
28
45+28=73
49.5-54.5
52
55-59
11
73+11=84
54.5-59.5
57
60-64
10
84+10=94
59.5-64.5
62
65-69
5
94+5=99
64.5-69.5
67
Total
99
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