Question

The table below shows the Marks obtained in mathematics of 100 students. Find the mean marks obtained by students by a suitable method
|| |
|0-10 | 20|
|10-20 | 10|
|20-30| 20|
|30-40| 30|
|40-50| 20|




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Answer 1

Answer:

20

Explanation:

sum of observation/number of observation

20+10+20+30+20/5

100/5=20

Thus, 20 is the mean

Answer 2

Answer:

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