Random Variables Quiz 3

This quiz contains MCQs about Random Variables. Let us start with the Online Random Variables Quiz,

1. The set of all possible outcomes of a random experiment is called


2. Usually measurements give rise to ________ data


3. A discrete variable is also called


4. A Chi-Square random variable can assume the value


5. Random numbers are generated by some


6. In generating random number there are _________ number of assumptions to follow


7. A variable which can assume all values in the range is called


8. The number of deaths in a road accident is an example of ____________ variable


9. Which of the following is a characteristic of the probability distribution of a random variable?


10. A variable which takes measurable values is called a


11. Sum of dots when two dice are rolled is an example of


12. The number of children in a family is an example of ________ variable


13. In a family with two children, how many are girls there


14. If $X$ and $Y$ are independent random variables, then $Var(X-Y)$ is equal to


15. Continuous variable can assume ___________ values


16. The amount of milk produced by a cow is _________ variable


17. If $X$ and $Y$ are random variables, then $E(X-Y)$ is equal to


18. The number of automobile accidents per year in Multan city is an example of


19. In generating random numbers the probability of each digit/number is


20. Discrete data is usually generated by the process


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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