# Histograms

### Learn About Histograms

## About Histograms

Histograms are a graphical represention of data,that was first introduced to by Karl Pearson,the Histogram is one of the most useful tools in photography ,Also like a bar chart, a histogram is made up of columns plotted on a graph. Usually, there is no space between adjacent columns

## The Difference Between a Bar Chart and a Histogram

With Bar charts each column represents a group defined by a categorical variable ,But with Histogramseach column represents a group defined by a quantitative variable.

## Cons Of A Histograms

First, they are easy to manipulate in order to demonstrate or support a desired conclusion; this is accomplished by using more or fewer bars to reflect the information,The other weakness is that time differences are often not taken into consideration in the representation of the data

## A Normal Distribution A common pattern is the bell–shaped curve known as the “normal distribution.” In a normal distribution, points are as likely to occur on one side of the average as on the other. | ## Right Skewed Distribution The skewed distribution is a symmetrical because a natural limit prevents outcomes on one side | ## Bimodal Distribution The Bimodal distribution looks like a camals two humpsThe outcomes of two processes with different distributions are combined in one set of data |

## A Normal Distribution

A common pattern is the bell–shaped curve known as the “normal distribution.” In a normal distribution, points are as likely to occur on one side of the average as on the other.

## Right Skewed Distribution

The skewed distribution is a symmetrical because a natural limit prevents outcomes on one side