Question

JOR
The marks obtained by 30 students of class I of a certain
school in a mathematics papes consisting of 100 marks
presented in table below. Find the mean of the marks
obtained by the students.
92 95
40
56
60
50
Marks obtaine lo
70
20
72180
36
2
2
1
3
4
4
4
3
3
1
Menter of
studentilf;)
e​

Answer 1

Answer:

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Answer 2

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Mean =∑fixi/∑fi
Please refer to video for the calculation table. Here, ∑fixi=10+20+108+160+150+112+240+280+72+80+176+276+95=1779
∑fi=30
So, Mean =177930=59.3