1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

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 observations are

A
4, 7
B
2, 10
C
5, 6
D
2, 9
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Consider the first 10 natural numbers. If we multiply each number by $$-$$1 and add 1 to each number, the variance of the numbers so obtained is

A
6.5
B
8.25
C
2.87
D
3.87
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