 # RD Sharma Solutions Class 12 Mean And Variance Of A Random Variable

## RD Sharma Solutions Class 12 Chapter 32

What is Random Variable?

Corresponding to every outcome of any random experiment, a real number is associated this correspondence between the elements of the sample space associated to a random experiment and the set of real numbers is defined as a random variable.

Example: Consider a random experiment of tossing 3 coins there are total 8 possible outcomes i.e. TTT, TTH, THT, HTT, THH, HTH, HHT and HHH.

Therefore, the sample space S = { TTT, TTH, THT, HTT, THH, HTH, HHT, HHH }.

If Y is a random variable and p and q are real numbers, then Random Variable = pY + q, Mean = pY + q and variance = p.p Var (Y)

RD Sharma Solutions for Class 12th maths Mean and variance of a random variable will help you to understand important concepts like Probability distribution, Mean of a discrete random variable, Variance of a discrete random variable and more in a very simplified and organised way. Practice complete exercise wise solved RD Sharma Solutions of Mean and variance of a random variable by clicking the links given below so that you can accurately answer complex questions generally asked in competitive exams like JEE Mains and Advanced.

 Mean and Variance of a Random Variable Class 12th RD Sharma Exercises