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: A population parameter is
A) Unknown constant
B) Statistic
C) Known fixed value
D) Estimated value
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Correct Answer: A
Explanation: A parameter is a fixed but usually unknown characteristic of a population.
Q: Mode of a dataset represents
A) Range
B) Middle value
C) Average value
D) Most frequent value
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Correct Answer: D
Explanation: Mode refers to the value that appears most frequently in the dataset.
Q: Increasing sample size affects confidence interval by
A) Making it narrower
B) Making it wider
C) Keeping it same
D) No effect
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Correct Answer: A
Explanation: Larger sample sizes decrease variability, leading to narrower confidence intervals.
Q: The area under the entire normal distribution curve equals
A) 0.5
B) 1
C) ฯ
D) 2
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Correct Answer: B
Explanation: Total area under the curve of a probability distribution equals 1.
Q: Histogram is used to display
A) Categorical data
B) Proportions
C) Relationships
D) Frequency distribution of intervals
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Correct Answer: D
Explanation: Histograms show the frequency of data within equal-width intervals.