A random experiment is defined as: MCQ with Answer and Explanation

A random experiment is defined as:
A. An experiment with a predetermined outcome
B. An experiment conducted only once
C. An experiment that can be repeated under identical conditions with uncertain outcomes
D. An experiment where all outcomes are equally likely
Answer: Option C
Solution (By JKSSB Mock Tests)
A random experiment has well-defined possible outcomes, can be repeated under similar conditions, and the exact outcome cannot be predicted with certainty before performing the experiment.

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Practice More Statistics Questions

Question #1
In a box of 100 bulbs, 10 are defective. Two bulbs are chosen at random. The probability that both are non-defective is:
A. 89/110
B. 1 - (10/100)²
C. 90/100 × 89/99
D. (90/100)²

Correct Answer: Option C


Explanation:
P(first non-defective)=90/100, second non-defective=89/99, product.

This question belongs to: Accountancy and Statistics Statistics
Question #2
The mode can be located graphically using a:
A. Pie chart
B. Histogram
C. Frequency polygon
D. Ogive

Correct Answer: Option B


Explanation:
In a histogram, the mode corresponds to the highest bar (modal class); for grouped data, the exact mode can be interpolated within this class using the histogram's geometry.

This question belongs to: Accountancy and Statistics Statistics
Question #3
TFR of 2.1 children per woman is called replacement-level fertility because it:
A. Equals NRR=1 exactly
B. Results in zero population growth in the long run
C. Doubles population
D. Ensures population decline

Correct Answer: Option B


Explanation:
TFR of about 2.1 ensures each generation exactly replaces itself (assuming low mortality), leading to eventual zero growth.

This question belongs to: Accountancy and Statistics Statistics