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: Data that cannot be arranged in a specific order is
A) Interval
B) Ordinal
C) Ratio
D) Nominal
✅ Correct Answer: D
Explanation: Nominal data represents categories without any inherent order.
Q: A sample drawn so every element has equal chance is called
A) Cluster sample
B) Random sample
C) Stratified sample
D) Biased sample
✅ Correct Answer: B
Explanation: A random sample gives each member of the population an equal chance of selection.
Q: The median is unaffected by
A) Mean
B) Central values
C) Outliers
D) Sample size
✅ Correct Answer: C
Explanation: Unlike the mean, the median is resistant to extreme values or outliers.
Q: Probability of complementary events adds up to
A) 0
B) 1
C) Undefined
D) 2
✅ Correct Answer: B
Explanation: The sum of probabilities of an event and its complement is always 1.
Q: Chi-square test is used to
A) Calculate correlation
B) Compare means
C) Test independence
D) Estimate population mean
✅ Correct Answer: C
Explanation: Chi-square tests whether variables are independent in a contingency table.