Presentation of Data
Information obtained through surveys and experiments are called raw data. Unless organized systematically, this mass of information will be of no use. It is important therefore to organize the data for a meaningful interpretation. Data can be presented in textual, tabular or graphical forms.
Textual
In the textual form, the presentation is in narrative or in paragraph form. The data are within the text of the paragraph. This form may not get the immediate interest of the reader. But its advantage is that data in this form of presentation will be given a more comprehensive picture because of further explanation of its nature.
Tabular
The tabular method of presentation makes use f rows and columns like a frequency table or frequency distribution and statistical tables. The process of condensing classified data and arranging them in a table is called tabulation. Its advantages when used instead of textual presentation are listed below:
- It provides the reader a good grasp of the meaning of the quantitative relationship indicated in the report.
- The data are presented and organized in a systematic and orderly manner. With the use of columns and rows, comparison of values is made easier.
Graphical
The graphical presentation of data is the most effective means of organizing and presenting statistical data because the most important relationships are brought out more clearly and creatively in virtually solid and colourful figures called graphs.
Kinds of graph or diagram
- Bar Graph – this consists of bars of equal width, either drawn vertically or horizontally, segmented or non-segmented. Two or more kinds of information can be compared by showing them in multiple bar graphs.
- Line Graph – is obtained by plotting the frequency of a category above the point on the horizontal axis representing the category and then joining the points by straight lines. This graph shows the relationship between two or more sets of quantities.
- Pie Chart or Circle Graph – is simply a circle subdivided into number of slices that represent the various categories. The slices of the pie must be drawn in proportion to the different values of each item.
- Map Graph – in this type of graph, a map is drawn and divided into desired regions. Each region may be distinguished from other regions by shading with different colors or other symbols.
- Pictograph – sometimes known as picture graphs. In this type of chart, picture symbols are used to represent values.
Posted By: Andrea Beatrice Pechueco
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