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

The mean of the numbers $$a, b, 8,5,10$$ is 6 and the variance is 6.80 , then which of the following gives possible values of $$a$$ & $$b$$

A
$$a=1, b=6$$
B
$$a=0, b=7$$
C
$$a=3, b=4$$
D
$$a=5, b=2$$
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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