Vital statistics are related to: MCQ with Answer and Explanation

Vital statistics are related to:

A. Agricultural production

B. Births, deaths, and marriages

C. Industrial output

D. Stock market

Answer: Option B

Vital statistics pertain to the recording of vital events like births, deaths, marriages, etc.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

According to Sturges' rule, the approximate number of classes for n = 50 is: (Use k = 1 + 3.322 log₁₀ n)

A. 8

B. 5

C. 7

D. 6

Correct Answer: Option C

Explanation:
log₁₀50 ≈ 1.699; 3.322 × 1.699 ≈ 5.64; 1 + 5.64 = 6.64, which rounds to 7 classes.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

The weighted harmonic mean is used in which of the following situations?

A. Averaging percentages

B. Averaging rates when weights are in the denominator units

C. Finding the typical value of a symmetric distribution

D. Measuring dispersion

Correct Answer: Option B

Explanation:
Weighted harmonic mean is useful when the weights are in the same units as the numerator of a rate.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

Bayes' theorem is used to find:

A. Posterior probability

B. Joint probability

C. Complementary probability

D. Unconditional probability

Correct Answer: Option A

Explanation:
Bayes' theorem updates prior probabilities with new evidence to give posterior probabilities.

This question belongs to: Accountancy and Statistics Statistics