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: If all values are identical, standard deviation is
A) Positive
B) Zero
C) Undefined
D) Negative
✅ Correct Answer: B
Explanation: When all values are the same, there is no variability, so standard deviation is zero.
Q: A histogram displays
A) Grouped data
B) Categorical data
C) Linear regression
D) Cumulative frequency
✅ Correct Answer: A
Explanation: Histogram is a graphical representation of grouped numerical data.
Q: Skewness indicates
A) Distribution symmetry
B) Central value
C) Mean location
D) Data count
✅ Correct Answer: A
Explanation: Skewness measures the asymmetry of the probability distribution of a real-valued variable.
Q: Mean can be defined as the
A) Middle value
B) Sum of values divided by count
C) Random value
D) Common value
✅ Correct Answer: B
Explanation: Mean is calculated by dividing the total of all values by the number of values.
Q: Median can be identified as the
A) Mode
B) Extreme value
C) Outlier
D) Central value
✅ Correct Answer: D
Explanation: Median is the central point in an ordered data set.