If the median of 5, 7, 9, x, 11, 13 is 9.5, then x is: MCQ with Answer and Explanation

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If the median of 5, 7, 9, x, 11, 13 is 9.5, then x is:

A. 9

B. 10

C. 8

D. 12

Answer: Option B

Solution (By JKSSB Mock Tests)

The six values in order: 5,7,9,x,11,13. Median = (9+x)/2 = 9.5 ⇒ x=10.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

Laspeyres' price index formula uses which of the following as weights?

A. Arbitrary quantities

B. Base year quantities

C. Average of base and current year quantities

D. Current year quantities

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Correct Answer: Option B

Explanation:
Laspeyres' index uses base year quantities (q0) as weights to measure price changes.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Given P(A)=0.4, P(B)=0.5, and A and B are mutually exclusive, P(A∪B) is:

A. 0.7

B. 0.2

C. 0.9

D. 0.1

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Correct Answer: Option C

Explanation:
Mutually exclusive ⇒ P(A∪B) = P(A)+P(B) = 0.4+0.5=0.9.

This question belongs to: Accountancy and Statistics Statistics

Question #3

If a population has a high proportion of young people, the crude death rate may be low even if age-specific rates are high. This is an example of:

A. Sampling error

B. Direct standardization

C. Reverse causality

D. Age structure effect

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Correct Answer: Option D

Explanation:
A young population has fewer old people where mortality is high, thus CDR can be low.

This question belongs to: Accountancy and Statistics Statistics

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