Question

The mean of marks obtained by 15 students is 63 if marks of 2 students were read wrongly - 73 instead of 78 and 59 instead of 69 find the correct mean

Answer 1

Given;
The mean of marks obtained 15 students =63
2Students were read - 73 instead of 78 and 59 instead 69.
Marks obtained by 15 students=63*15
=945
=945+15
=960

The correct mean marks of 15 students =960/15
=64

Answer 2

Answer:

Given;

The mean of marks obtained 15 students =63

2Students were read - 73 instead of 78 and 59 instead 69.

Marks obtained by 15 students=63*15

=945

=945+15

=960

The correct mean marks of 15 students =960/15

=64

PLZ MARK AS BRIANLIEST AND THX FOR THE SUPERB QUESTION