1
Question
The number of students who scored more than 700 is
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Solution
Consider
the following table.
Marks obtained
No. of examinations
Cumulative frequency
Suitable points
0-7
26
30
(450,30)
7-14
31
75
(500,75)
14-21
35
135
(550,135)
21-28
42
187
(600,187)
28-35
82
241
(650,241)
35-42
71
308
(700,308)
42-49
54
353
(750,353)
49-56
19
400
(800,400)
Now draw the less than ogive using suitable points
Consider the following table.
|
Marks obtained |
No. of examinations |
Cumulative frequency |
Suitable points |
|
0-7 |
26 |
30 |
(450,30) |
|
7-14 |
31 |
75 |
(500,75) |
|
14-21 |
35 |
135 |
(550,135) |
|
21-28 |
42 |
187 |
(600,187) |
|
28-35 |
82 |
241 |
(650,241) |
|
35-42 |
71 |
308 |
(700,308) |
|
42-49 |
54 |
353 |
(750,353) |
|
49-56 |
19 |
400 |
(800,400) |
Now draw the less than ogive using suitable points
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