1
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

The mean of five observations is 4 and their variance is 5.2. If three of these observations are 1, 2 and 6, then the other two are

A
2 and 9
B
3 and 8
C
4 and 7
D
5 and 6
2
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 :

A
8
B
5
C
2
D
1
3
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

A
$$-$$3/5
B
6/5
C
4/5
D
3/5
4
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

The runs of two players for 10 innings each are as follows

BITSAT 2021 Mathematics - Statistics Question 5 English

The more consistent player is

A
player A
B
player B
C
both player A and B
D
None of these
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