For a moderately skewed distribution, the difference between mean and mode is approximately: MCQ with Answer and Explanation

For a moderately skewed distribution, the difference between mean and mode is approximately:
A. 3 (Mean - Median)
B. 2 (Median - Mean)
C. 2 (Mean - Median)
D. 3 (Median - Mean)
Answer: Option A
Solution (By JKExamLibrary)
From empirical relation: Mean - Mode ≈ 3(Mean - Median).

This question belongs to: Accountancy and Statistics Statistics

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Practice More Statistics Questions

Question #1 Report Error
If a constant is added to all observations, which of the following measures changes?
A. Range
B. Arithmetic mean
C. Variance
D. Standard deviation

Correct Answer: Option B


Explanation:
Adding a constant changes the mean but not measures of dispersion.

This question belongs to: Accountancy and Statistics Statistics
Question #2 Report Error
Perinatal mortality rate per 1000 total births is 35. If there were 700 late fetal deaths and early neonatal deaths combined, the number of total births (live births + stillbirths) is:
A. 2,000
B. 20,000
C. 24,500
D. 35,000

Correct Answer: Option B


Explanation:
Rate = (perinatal deaths / total births) × 1000 => 35 = 700 / total births × 1000 => total births = 700,000/35 = 20,000.

This question belongs to: Accountancy and Statistics Statistics
Question #3 Report Error
A researcher wants to ensure every individual in a population has an equal chance of being selected. She should use:
A. Purposive sampling
B. Snowball sampling
C. Simple random sampling
D. Quota sampling

Correct Answer: Option C


Explanation:
Simple random sampling gives each member an equal probability of selection.

This question belongs to: Accountancy and Statistics Statistics