Statistics MCQs
Statistics MCQs cover probability, sampling, hypothesis testing, correlation, regression, and data interpretation. Ideal for CSS, NTS, PMS, GAT, and university exams, they boost conceptual understanding, analytical skills, and real-world statistical application.
Q: Outlier in a boxplot is represented by
A) Dots beyond whiskers
B) Box end
C) Whiskers
D) Midline
✅ Correct Answer: A
Explanation: Outliers appear as individual dots beyond the whiskers in a boxplot.
Q: If the mean is greater than the median, the distribution is
A) Uniform
B) Negatively skewed
C) Symmetric
D) Positively skewed
✅ Correct Answer: D
Explanation: When the mean is larger than the median, the distribution is positively skewed.
Q: Central Limit Theorem applies when sample size is
A) Large
B) Unknown
C) Small
D) Fixed at 10
✅ Correct Answer: A
Explanation: Central Limit Theorem states that the sampling distribution of the mean becomes normal as sample size increases.
Q: Probability of selecting an ace from a standard deck
A) 1/26
B) 1/13
C) 1/4
D) 4/13
✅ Correct Answer: B
Explanation: There are 4 aces in a 52-card deck, so the probability is 4/52 = 1/13.
Q: The variance of a constant value is always
A) Undefined
B) 0
C) 1
D) Equal to mean
✅ Correct Answer: B
Explanation: Variance measures spread, and if all values are the same, spread is zero.