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: The symbol ฮผ represents
A) Median
B) Population mean
C) Sample mean
D) Sample variance
โ
Correct Answer: B
Explanation: The Greek letter ฮผ denotes the population mean in statistics.
Q: Standard error decreases when
A) Sample size increases
B) Variance increases
C) Sample is biased
D) Mean increases
โ
Correct Answer: A
Explanation: As sample size increases, standard error (variability of sample mean) decreases.
Q: Skewness measures
A) Symmetry
B) Central tendency
C) Frequency
D) Spread
โ
Correct Answer: A
Explanation: Skewness indicates the asymmetry of a data distribution.
Q: A hypothesis is tested to
A) Make predictions
B) Prove a theory
C) Make a statistical decision
D) Estimate a parameter
โ
Correct Answer: C
Explanation: Hypothesis testing determines if a claim about a population is supported by sample data.
Q: Discrete variables take
A) Only integers
B) Infinite values
C) Fixed distinct values
D) Only decimals
โ
Correct Answer: C
Explanation: Discrete variables have countable values, such as number of students.