If the arithmetic mean of 7 numbers is 12, the sum of these numbers is: MCQ with Answer and Explanation

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If the arithmetic mean of 7 numbers is 12, the sum of these numbers is:

A. 84

B. 7

C. 19

D. 12

Answer: Option A

Solution (By JKSSB Mock Tests)

Sum = mean × n = 12 × 7 = 84.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

The probability that a leap year has 53 Mondays is:

A. 2/7

B. 1/7

C. 3/7

D. 5/7

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Correct Answer: Option A

Explanation:
Leap year has 366 days = 52 weeks + 2 days. Favorable pairs with Monday: (Sun,Mon), (Mon,Tue) => 2/7.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Data on attributes is said to be inconsistent if:

A. Any class frequency is negative

B. Both A and B

C. The sum of positive frequencies equals N

D. Any class frequency is greater than N

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Correct Answer: Option B

Explanation:
Frequencies represent counts, so they cannot be negative, nor can any subset exceed the total population (N).

This question belongs to: Accountancy and Statistics Statistics

Question #3

The component of HDI that relates to health is:

A. Life expectancy at birth

B. Mean years of schooling

C. Gross National Income per capita

D. Population growth rate

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Correct Answer: Option A

Explanation:
Health is measured by life expectancy at birth.

This question belongs to: Accountancy and Statistics Statistics

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