MCQs Random Variables 1

This test contains MCQs about Random Variables.

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


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


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


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


5. The lifetime of a car tire is


6. Height measurements of 50 students studying in a college


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


8. A random variable is also called


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


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


11. Random numbers can be generated mechanically by


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


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


14. The speed of the car is an example of


15. A quantity which can vary from one individual to another 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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