# NCERT Solutions Class 12 Maths Chapter 13 Exercise 13.4 Probability

NCERT Solutions for Class 12 Maths Chapter 13 Exercise 13.4 Probability explains the probability distribution of a random variable, its mean, and variance. A random variable is a real-valued function whose domain is the sample space of a random experiment. The probability distribution of a random variable defines the probability of its value that is unknown. The mean or expectation of a random variable X is the sum of the products of all possible values of X by their respective probabilities. It is represented by µ or E (X) = x_{1} p_{1}+ x_{2} p_{2} + ... + x_{n} p_{n}. Variance is used to calculate the variability or spread in the values of a random variable. The variance of X is denoted by Var (X) and is calculated using the formula Var(X) = E(X – µ)^{2}, where µ denotes the mean of X.

The sums provided in this exercise are majorly focused on imparting a clear understanding of applying all these concepts especially to find the mean and variance of a random variable. NCERT solutions Class 12 Maths Chapter 13 Exercise 13.4 succinctly covers the whole topic of random variables to promote precise error-free learning. There are 17 sums provided in this exercise for students to learn a step-by-step understanding of the probability distribution of a random variable, its mean, and variance. These solutions are also available in a scrollable PDF format given below.

**ā** Download NCERT Solutions Class 12 Maths Chapter 13 Exercise 13.4

**Exercise 13.4 Class 12 Chapter 13 **

### More Exercises in Class 12 Maths Chapter 13

- NCERT Solutions Class 12 Maths Chapter 13 Ex 13.1
- NCERT Solutions Class 12 Maths Chapter 13 Ex 13.2
- NCERT Solutions Class 12 Maths Chapter 13 Ex 13.3
- NCERT Solutions Class 12 Maths Chapter 13 Ex 13.5
- NCERT Solutions Class 12 Maths Chapter 13 Miscellaneous Exercise

## NCERT Solutions Class 12 Maths Chapter 13 Exercise 13.4 Tips

NCERT Solutions for Class 12 Maths Chapter 13 comprises several sample problems and examples that help students to form a clear understanding of random variables and their probability distribution. Using these solutions for exam preparation will ensure that you will not miss out on any topic. Since there are a lot of such questions with solutions, students will not have any trouble establishing a crystal clear understanding of this section.

The interactive illustrations provided in Class 12 Maths NCERT Solutions Chapter 13 Exercise 13.4 will help in building up the necessary logic and confidence in the students to approach any competitive exams. Kids can eliminate all their fear and worry by simply following these comprehensive guides that will help them in strategizing their learning.

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