# What is Histogram definition/concept/elaboration

A histogram is a statistical tool , more specific to descriptive statistics. It is a graph model that measures the distribution of frequencies or intervals in relation to certain groups . It is, therefore, a statistical method that measures a concrete reality . For example, to indicate the number of people aged between 18 and 65 in a country, the division of a population according to different blood groups or the distribution of wages within a group.

The different values manipulated in a histogram are registered in coordinates in diagram form, so it is possible to measure the intervals of each object of study .

Therefore, the histogram is a statistical tool that serves to explain data in a summarized way through a graph. This chart is especially useful when it comes to measuring quantitative variables.

### The Key Concepts of a Histogram

Like all graphs, the purpose of a histogram is to quantify a reality. For this we must use two concepts: frequency and variable. The first refers to the number of times something happens and the second is the numerical value on a measurement scale. histogram

### Other graphical representations in descriptive statistics

Analysis of statistical data can be performed with histograms and other types of graphs.

In the bar diagram, numerical data is transmitted in a frequency table. In other words, in these diagrams the absolute frequencies (the number of times the data are repeated) are related with a variable (which can be quantitative or qualitative). An example of a bar diagram would be a graph that quantifies the hair color of a group of students. histogram

### The pie diagram is represented by qualitative variable data, that is, those that cannot be quantified or measured

Typically, these diagrams are represented in a circle divided into sectors that reflect the proportion of a subject. For example, in a survey that asks a number of students about their preferences, the results obtained are reported in percentages within a circle. histogram

In conclusion, both the histogram and the different graphic tools are statistical views that allow you to enumerate data, analyze and compare information, definitely, to know reality in a mathematical and objective way.