Q9 of 44 Page 91

The Arithmetic mean of all the factors of 24 is

All the factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24. [These numbers divide 24 completely]

Total number of observations = 8


Mean is given by



⇒


⇒ Mean = 7.5


Thus, option (D) is correct.

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6

The median of 2,7,4,8,9,1 is

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The mean of first 5 whole number is

A. 2


B. 2.5


C. 3


D. 0

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The arithmetic mean of 10 number is-7. If 5 is added to every number, then the new Arithmetic mean is

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The mean of 5 numbers is 20. If one number is excluded their mean is 15. Then the excluded number is