To study the opinion of employees about a new HR policy, the HR department sends an email link to a survey. The respondents voluntarily participate. This is a: MCQ with Answer and Explanation

To study the opinion of employees about a new HR policy, the HR department sends an email link to a survey. The respondents voluntarily participate. This is a:
A. Voluntary response sample
B. Stratified sample
C. Probability sample
D. Simple random sample
Answer: Option A
Solution (By JKSSB Mock Tests)
When respondents self-select, the sample is not probability-based and may be biased; this is a voluntary response sample.

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Practice More Statistics Questions

Question #1
Which measure of central tendency is most suitable for qualitative ordinal data like intelligence rankings?
A. Mean
B. Median
C. Mode
D. Geometric mean

Correct Answer: Option B


Explanation:
Ordinal data can be ranked; the median is the appropriate measure as it does not require numerical differences.

This question belongs to: Accountancy and Statistics Statistics
Question #2
If the Arithmetic Mean is 50 and the number of items is 10, the sum of all items is:
A. 500
B. 100
C. 5
D. 50

Correct Answer: Option A


Explanation:
Sum = Mean × N = 50 × 10 = 500.

This question belongs to: Accountancy and Statistics Statistics
Question #3
The median of 2, 2, 3, 4, 5, 5, 5, 6 is:
A. 4.5
B. 5.5
C. 5
D. 4

Correct Answer: Option A


Explanation:
Ordered data, n=8, median = average of 4th and 5th = (4+5)/2=4.5.

This question belongs to: Accountancy and Statistics Statistics