- If the given data is distributed around a central value in the bell-shaped curve without any left or right bias, then it is called
**Normal distribution**. It is also called a **Bell Curve** because it looks like a bell?shaped curve.
- The normal distribution has a mean value, half of the data lies to the left of the curve, and half of the data lies right of the curve.
- In probability theory, the normal distribution is also called a
**Gaussian distribution**, which is used for the probability distribution.
- It is a probability distribution function used to see the distribution of data over the given range.
- Normal distribution has two important parameters:
**mean(µ)** and **standard deviation(σ)**.