1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1
For a random variable X, E(X) = 3 and E(X2) = 11. The variable of X is :
2
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1
The sum of 10 items is 12 and the sum of their squares is 18, then the standard deviation will be
3
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1
The runs of two players for 10 innings each are as follows
The more consistent player is
4
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1
The mean of five observation is 5 and their variance is 9.20. If three of the given five observation are 1, 3 and 8, then a ratio of other two observations is
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