In a distribution, the mode is 30, median 32, mean 34. The distribution is: MCQ with Answer and Explanation

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In a distribution, the mode is 30, median 32, mean 34. The distribution is:

A. Positively skewed

B. Symmetric

C. Leptokurtic

D. Negatively skewed

Answer: Option A

Solution (By JKSSB Mock Tests)

Mean > Median > Mode indicates positive skewness.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

The dependency ratio measures the ratio of:

A. Unemployed to employed population

B. Female to male population

C. Non-working age population to working-age population

D. Rural to urban population

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Correct Answer: Option C

Explanation:
Dependency ratio = (Population under 15 + Population over 65) / Population aged 15-64.

This question belongs to: Accountancy and Statistics Statistics

Question #2

If the arithmetic mean of 5 numbers is 20, and the arithmetic mean of another 3 numbers is 28, the combined mean of all 8 numbers is:

A. 22

B. 24

C. 23

D. 25

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Correct Answer: Option C

Explanation:
Combined mean = (5×20 + 3×28) / (5+3) = (100 + 84) / 8 = 184 / 8 = 23. This formula weights each group's mean by its size.

This question belongs to: Accountancy and Statistics Statistics

Question #3

Bayes' theorem is a formula to calculate:

A. Intersection of independent events

B. Union of events

C. Unconditional probability

D. Reverse conditional probability (posterior)

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Correct Answer: Option D

Explanation:
Bayes' theorem calculates the posterior probability of a cause given the observed effect, effectively reversing the conditional direction.

This question belongs to: Accountancy and Statistics Statistics

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