You are given the following marks secured by 45 students in an examination:

Marks 20−29 30−39 40−49 50−59 60−69 70−79

No. of Students 4 10 12 9 7 3

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Solution

Marks No. of Students

19.5 − 29.5
29.5 − 39.5
39.5 − 49.5
49.5 − 59.5
59.5 − 69.5
69.5 − 79.5 4
10
12
9
7
3

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Similar questions

Marks	10−19	20−29	30−39	40−49	50−59	60−69	70−79	80−89	90−99
Number of Students	29	87	181	247	263	133	40	9	2

Marks	20−25	25−30	30−35	35−40	40−45	45−50	50−55	55−60	60−65	65−70
Students	6	3	7	4	6	4	2	8	3	7

Marks	0−9	10−19	20−29	30−39	40−49	50−59
No. of Students	3	7	15	25	10	4

Following table shows the marks of 120 students at an examination. Draw an ogive for the table: estimate Inter-quartile range.

Marks (more than)	0-9	10-19	20-29	30-39	40-49	50-59
No of students	2	5	15	25	10	3

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Marks	No. of Students
19.5 − 29.5 29.5 − 39.5 39.5 − 49.5 49.5 − 59.5 59.5 − 69.5 69.5 − 79.5	4 10 12 9 7 3