the marks obtained by 500 students in an examination are given below find the mean and median marks marks is 0 to 10 10 to 20 20 to 30 30 to 40 40 to 50 number of students is 25 37 81 190 167
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Answer:
Marks obtained by 20 students are :
25,40,15,16,28,39,41,22,28,30,36,40,30,18,22,32,48,32,38,40.
∴Mean,
x
ˉ
=
20
25+40+15+16+28+39+41+22+28+30+36+40+30+18+22+32+48+32+38+40
=31. (Out of 50)
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