What is Normal Distribution?

When we talk about a distribution, it is simply a collection of scores or raw data. From this data, we can easily calculate the :
Mean: This is simply the average of all of the scores.
Standard Deviation: The standard deviation tells you how much scores tend to differ from the mean. Its a measure of how spread out the scores are.
In Statistics , the Normal distribution or also known as Gaussian Distribution is a continuous probability distribution which tells that how data clusters around the mean or average. Generally the graph plotted is a bell shape , with a peak at the mean. This is always symmetrical with the mean.