# Statistics

It is a branch of science which deals with the collection, presentation, analysis and interpretation of numerical Data.

## Data

Facts or numerical figures, collected with a definite purpose, are called data.

## Permutations and Combinations

In mathematics, the notion of permutation combination is used in slightly different way from the ordinary meaning. Permutation and combination are the separate words. We can easily differentiate them on the...Read More

## Frequency Distribution Table

To exemplify and simplify a large set of data we have a statistical method of making Frequency distribution table. It is simply a technique to organize and simplify data to make it more presentable and understandable.

Main purpose of this approach is to see how often each value is occurred within the set. This number of occurrence of any valu...Read More

## Bar Graph

A bar graph is a graph which contains rectangular bars or square bars which are used in statistical mathematics, to calculate given data. These graphs use picture representation of data. It is generally used for depiction of nominal data. Bar graphs are generally of three types like:

1. Double bar graphs

2. Single bar graphs

3. Divided Bar graphs