MCQs Random Variables 1

This test contains MCQs about Random Variables.

1. Height measurements of 50 students studying in a college


2. A quantity which can vary from one individual to another is called


3. If $X$ and $Y$ are random variables then $E(X+Y)$ is equal to


4. A variable whose value is determined by the outcome of a random experiment is called


5. Suppose, four coins are tossed, the value of a random variable $H$ (No. of heads) is:


6. The sum of probabilities of a discrete random variable is


7. A random variable assuming an infinite number of values is called


8. The lifetime of a car tire is


9. A random variable assuming only a finite number of values is called:


10. The speed of the car is an example of


11. Random numbers can be generated mechanically by


12. The number of students in a class is an example of


13. If $x$ is a discrete random variable, the function $f(x)$ is


14. A random variable is also called


15. A variable which can assume each and every value within a given range is called


A Random Variable (random quantity or stochastic variable) is a set of possible values from a random experiment.

The domain of a random variable is called sample space. For example, in the case of a coin toss experiment, there are only two possible outcomes, namely heads or tails. A random variable can be either discrete or continuous. The discrete random variable takes only certain values such as 1, 2, 3, etc., and a continuous random variable can take any value within a range such as the height of persons.

Learn about Pseudo-Random Numbers

Muhammad Imdad Ullah

Currently working as Assistant Professor of Statistics in Ghazi University, Dera Ghazi Khan. Completed my Ph.D. in Statistics from the Department of Statistics, Bahauddin Zakariya University, Multan, Pakistan. l like Applied Statistics, Mathematics, and Statistical Computing. Statistical and Mathematical software used is SAS, STATA, GRETL, EVIEWS, R, SPSS, VBA in MS-Excel. Like to use type-setting LaTeX for composing Articles, thesis, etc.

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