Statistics MCQs
Statistics MCQs serve as an essential tool for students, researchers, and exam candidates to understand and master the fundamentals of statistical analysis. This category features a rich set of multiple-choice questions covering topics such as probability, sampling, hypothesis testing, measures of central tendency and dispersion, correlation, regression, and data interpretation. These MCQs are ideal for test preparations including CSS, NTS, PMS, GAT, university entrance exams, and job recruitment tests where statistical knowledge is tested. The questions range from basic theory to practical problem-solving scenarios, allowing learners to evaluate and enhance their conceptual understanding. Practicing regularly not only strengthens your analytical skills but also prepares you to apply statistical techniques in real-world contexts. This category is particularly useful for students in social sciences, economics, business, and research-based programs. Improve your statistical thinking by solving our curated Statistics MCQs.
Q: Box plot visualizes
A) Data spread
B) Time series
C) Trends
D) Central tendency
✅ Correct Answer: A
Explanation: A box plot shows quartiles and highlights dispersion and outliers.
Q: Frequency polygon is used to
A) Compare ranges
B) Show data symmetry
C) Graph frequency distributions
D) Display box plots
✅ Correct Answer: C
Explanation: Frequency polygon is a line graph showing frequency distribution of data.
Q: Bimodal data sets contain
A) No peaks
B) One peak
C) Random peaks
D) Two peaks
✅ Correct Answer: D
Explanation: Bimodal data have two values that occur most frequently.
Q: A variable that can be measured is called
A) Independent variable
B) Dependent variable
C) Qualitative variable
D) Quantitative variable
✅ Correct Answer: D
Explanation: Quantitative variables have numerical values that can be measured.
Q: Null hypothesis is usually denoted by
A) H1
B) H2
C) H0
D) Ha
✅ Correct Answer: C
Explanation: H0 represents the null hypothesis in statistical testing.
Q: Sampling error is caused by
A) Population fluctuation
B) Sample fluctuation
C) Researcher bias
D) Non-response bias
✅ Correct Answer: B
Explanation: Sampling error occurs when a sample does not perfectly represent the population.
Q: Data measured in units such as time, weight, and length is
A) Nominal
B) Ordinal
C) Interval
D) Ratio
✅ Correct Answer: D
Explanation: Ratio data has a true zero and allows comparisons like twice as much or half.
Q: A p-value less than 0.05 typically leads to
A) Increasing sample size
B) Retesting data
C) Rejecting H0
D) Accepting H0
✅ Correct Answer: C
Explanation: A p-value < 0.05 suggests strong evidence against the null hypothesis.
Q: A percentile shows
A) Shape of distribution
B) Range of data
C) Total data
D) Rank of value in data
✅ Correct Answer: D
Explanation: Percentiles indicate the relative standing of a value within the dataset.
Q: A Z-score of 0 means the value is
A) Above average
B) Below average
C) At the mean
D) An outlier
✅ Correct Answer: C
Explanation: A Z-score of 0 indicates that the value equals the mean of the data.