If a coin is tossed 3 times, probability of exactly 2 heads is: MCQ with Answer and Explanation

Question
If a coin is tossed 3 times, probability of exactly 2 heads is:
A. 5/8
B. 1/2
C. 1/4
D. 3/8
Answer: Option D
Solution (By JKSSB Mock Tests)
Favorable: HHT, HTH, THH → 3 out of 8.
This question belongs to: Accountancy and Statistics Statistics
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Practice More Statistics Questions

Question #1
The sum of absolute deviations is minimized by:
A. Geometric mean
B. Mean
C. Mode
D. Median
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Correct Answer: Option D

Explanation:
Median minimizes Σ |x - M|.
This question belongs to: Accountancy and Statistics Statistics
Question #2
In attribute classification, a 'positive attribute' refers to:
A. An attribute with only two possible categories
B. The presence of a characteristic, denoted by a capital letter (e.g., A for literate)
C. An attribute that is desirable or beneficial
D. An attribute that always has a numerical value greater than zero
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Correct Answer: Option B

Explanation:
In statistical notation for attributes, a positive attribute (e.g., A) denotes the presence of a characteristic, while its absence is denoted by the corresponding Greek letter (e.g., α for illiterate).
This question belongs to: Accountancy and Statistics Statistics
Question #3
Maternal Mortality Ratio (MMR) is an indicator of:
A. General population mortality
B. Geriatric care quality
C. Child health care quality
D. Risk associated with pregnancy and childbirth
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Correct Answer: Option D

Explanation:
MMR tracks maternal deaths related to pregnancy, childbirth, and the puerperium, highlighting maternal healthcare quality.
This question belongs to: Accountancy and Statistics Statistics
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