A coin is tossed twice. The probability of getting at least one head is: MCQ with Answer and Explanation

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A coin is tossed twice. The probability of getting at least one head is:

A. 1/4

B. 3/4

C. 1

D. 1/2

Answer: Option B

Solution (By JKSSB Mock Tests)

All outcomes except TT (1/4). So 1 - 1/4 = 3/4.

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1

Which measure of central tendency can be used for open‑end distributions?

A. Median

B. Arithmetic mean

C. Weighted mean

D. Harmonic mean

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Correct Answer: Option A

Explanation:
The median can be determined even if the extreme classes are open‑ended, as long as the median class is not open.

This question belongs to: Accountancy and Statistics Statistics

Question #2

Maternal Mortality Ratio is defined as maternal deaths per:

A. 100,000 women of reproductive age

B. 100,000 live births

C. 1000 women

D. 1000 live births

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Correct Answer: Option B

Explanation:
MMR = (Maternal deaths / Live births) × 100,000.

This question belongs to: Accountancy and Statistics Statistics

Question #3

A questionnaire should avoid 'double-barreled' questions because they:

A. Ask about two things at once, confusing the respondent

B. Are too short

C. Use difficult words

D. Are too long

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Correct Answer: Option A

Explanation:
Double-barreled questions combine two queries, making it hard to answer accurately.

This question belongs to: Accountancy and Statistics Statistics

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