JEE Main 8 Apr 2019 Paper 2 Solved Paper
© examsiri.com
Question : 90 of 90
Marks:
+1,
-0
A student scores the following marks in five tests : 45, 54, 41, 57, 43. His score is not known for the sixth test. If the mean score is 48 in the six tests, then the standard deviation of the marks in six tests is :
[8 Apr 2019 Shift 2]
Go to Question: