Bayes' theorem is particularly useful in: MCQ with Answer and Explanation

Bayes' theorem is particularly useful in:
A. Constructing frequency distributions
B. Determining sample size
C. Calculating simple probabilities
D. Updating beliefs with new evidence in diagnostic testing or machine learning
Answer: Option D
Solution (By JKSSB Mock Tests)
Bayes' theorem provides a formal framework for revising prior probabilities based on observed data, crucial in medical testing (e.g., disease probability given positive test) and Bayesian statistics.

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Practice More Statistics Questions

Question #1
The curve obtained by joining the midpoints of histogram bars is:
A. Bar chart
B. Pie chart
C. Frequency polygon
D. Ogive

Correct Answer: Option C


Explanation:
Frequency polygon connects class midpoints with lines.

This question belongs to: Accountancy and Statistics Statistics
Question #2
Which of the following is a necessary condition for consistency of data for two attributes?
A. (AB) ≥ 0
B. (αβ) ≥ 0
C. All of these
D. (A) ≥ (AB)

Correct Answer: Option C


Explanation:
All ultimate class frequencies must be non-negative, and marginal conditions like (A) ≥ (AB) must hold.

This question belongs to: Accountancy and Statistics Statistics
Question #3
Cost of Living Index is essentially the same as:
A. Wholesale Price Index
B. Consumer Price Index
C. Sensex
D. Index of Industrial Production

Correct Answer: Option B


Explanation:
Cost of Living Index measures changes in retail prices, i.e., CPI.

This question belongs to: Accountancy and Statistics Statistics