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**What is a Random Variable?** The real number assigned to each outcome of space is known as Random Variable.

In other words, it is a function that associates a real number with each element of the **sample space**.

Two coins are tossed, Let ‘**X**‘ be the random variable representing the number of heads, What is the value random variable **X**.

**X** is the random variable representing the number of heads

**S = {hh,tt,th,ht}**

**Types**

Random varibale are of two types

- Discreate Random Varibale
- Continuous Random Variable.

**Discreate Random Variables**:

A random variable x is said to be discreate random variable if its set of possible outcomes are countable i.e. having a specific value.

**=>p(x=a) (probability of x at a)**

**Continuous Random Variable **

A random variable x is said to be Continuous random variable if its set of possible outcomes is lies in between a specific range.

**=> F(x) p(a<=x<=b)**

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