Random Variable MCQ 2

This post contains multiple choice questions about Random Variable MCQ. The Quiz Random Varaible MCQ is about types of random variables, the generation of random numbers, the probability distribution of a random variable, etc. Let us start with the Random Variable MCQ Quiz.

Online MCQs about Random Variables with Answers

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

 
 
 
 

2. A chi-square random variable can assume the value:

 
 
 
 

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 number of students in a class is an example of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 

9. If $X$ is a uniform variate $U(5, 10)$ then the mean of $X$ is

 
 
 
 

10. The lifetime of a car tire is

 
 
 
 

11. Height measurements of 50 students studying in a college

 
 
 
 

12.

If $X$ is a uniform variate $U(5, 10)$ then the variance of $X$ is

 
 
 
 

13. If $X\sim N(\mu, \sigma^2)$ and $a$ and $b$ are real numbers, then the mean of $(aX+b)$ is

 
 
 
 

14. Random numbers can be generated mechanically by

 
 
 
 

15. The observed value of a statistic is:

 
 
 
 

16. A random variable is also called

 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. The speed of the car is an example of

 
 
 
 


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

Random Variable MCQ Quiz

  • A random variable is also called
  • A random variable assuming only a finite number of values is called:
  • A random variable assuming an infinite number of values is called
  • The number of students in a class is an example of
  • The speed of the car is an example of
  • Random numbers can be generated mechanically by
  • Suppose, four coins are tossed, the value of a random variable $H$ (No. of heads) is:
  • A quantity which can vary from one individual to another is called
  • A variable which can assume every value within a given range is called
  • The lifetime of a car tire is
  • Height measurements of 50 students studying in a college
  • A variable whose value is determined by the outcome of a random experiment is called
  • If $x$ is a discrete random variable, the function $f(x)$ is
  • If $X$ and $Y$ are random variables then $E(X+Y)$ is equal to
  • The sum of probabilities of a discrete random variable is
  • A chi-square random variable can assume the value:
  • The observed value of a statistic is:
  • If $X$ is a uniform variate $U(5, 10)$ then the mean of $X$ is
  • If $X$ is a uniform variate $U(5, 10)$ then the variance of $X$ is
  • If $X\sim N(\mu, \sigma^2)$ and $a$ and $b$ are real numbers, then the mean of $(aX+b)$ is

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.

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