# Economics: Collection and Presentation of Data: Presentation of Data and Classification

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## Presentation of Data

Presentation of data refers to the organization of data into tables, graphs or charts, so that logical and statistical conclusions can be derived from the collected measurements.

Presentation of data can be done various methods which are follows:

### Classification

Classification is a process of arranging data into classes or groups according to their resemblances and affinities. Mass data in its original form is called raw data.

#### Variable

When data is capable of being classified in the magnitude of time or size it is called as variable.

#### Attributes

When data cannot be classified in the magnitude of time or size it is known as an attribute. These can only be numbered for a study of a limited purpose.

#### Statistical Series

When the data is presented in some specific order and sequence it is called as a statistical series.

Three types of series are as follows:

Individual series: In this kind of series items are shown individually with their corresponding value. Each item has its separate and individual existence.

Discrete Series: This type of series is designed to show variables with definite break with their respective frequencies. Frequency refers to the repetitiveness of a value or item.

Continuous Series: This kind of series is framed for placing frequency with corresponding group of variables.

### Tabulation

Tabulation is a process of systematic and logical presentation of numeric data in rows and columns, to facilitate comparison and statistical analysis. It facilitates comparison by bringing related information close to each other and helps in further analysis.

### Graphic or Diagrammatic Presentation of Data

Diagrammatic presentation is a geometrical version of the data. Diagrams present the facts in such a manner that just by glancing at them one can understand the most complex data.