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Random Variables and Probability Distributions MCQs for Competitive Exams

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Random Variables and Probability Distributions MCQs for Competitive Exams

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Topic Notes: Random Variables and Probability Distributions

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Quick Overview

Random Variables and Probability Distributions MCQs in Statistics are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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11
What fundamental component must be associated with a random variable to define its behavior in statistics?
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12
How is a random variable formally defined in probability theory?
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13
Which category of random variables includes measurements such as product lifespan, time, weight, and height?
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14
Which of the following variables does not represent a discrete probability distribution?
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15
A continuous random variable is defined as one that can assume any value within a specific _______________.
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16
What term describes a comprehensive list of all possible outcomes of an experiment paired with their respective probabilities?
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17
For a cumulative distribution function F(x), given that F(-∞) = 0, what is the value of F(∞)?
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18
Which distribution utilizes the formula mn / ((m + n)^2 * (m + n + 1)) to calculate its variance?
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19
For a uniform distribution defined on the interval [a, b] where a = 2.5 and b = 3.5, what is the mean of the distribution?
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20
Which term is commonly used to describe the cumulative distribution function of a random variable?
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