The scores of 10 students in a test with maximum marks 50 were as follows :
\[
28,36,34,28,48,22... VIDEO
The scores of 10 students in a test with maximum marks 50 were as follows :
\[
28,36,34,28,48,22,35,27,19,41 .
\]
If 2 grace marks are awarded to each student, what is the new variance?
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