It is easy to draw and simple to understand. Graphical representation can be used for both the educated section and uneducated section of the society. When the quartiles, deciles and percentiles are wanted. If the relationship between two variables is involved, it is a bivariate analysis. Graphical Representation is a way of analysing numerical data. A visual display of data using a diagram or graph (or chart) is called graphical representation. Two additional points may be added to the two extreme ends. The point at which two lines intersect is called an origin ‘O’. Line plots are graphical representations of numerical data. When these adjusted frequencies are plotted against the class intervals on a graph we get a smoothed frequency polygon. //. (2). In order to wipe out the irregularities and “also get a better notion of how the figure might look if the data were more numerous, the frequency polygon may be smoothed.â. The list of possible values may be fixed (also called finite); or it may go from 0, 1, 2, on to … There are two types of graphs to visually depict the information. It is used in many academic and professional disciplines but most widely so in the fields of mathematics, medicine and the sciences. 2. The term "chart" as a graphical representation of data has multiple meanings: A data chart is a type of diagram or graph , that organizes and represents a set of numerical or qualitative data. Bar Diagram. Measure of central tendency, mode can be easily determined with the help of this graph. The box containing the row number to the left of the row in a worksheet. Some of them are as follows: There are certain rules to effectively present the information in the graphical representation. 2. 3. Below are given the steps to draw an ogive. Graphical representation helps to quantify, sort and present data in a method that is understandable to a large … in each end with a frequency of O. Numbers of degrees may be measured off “by eye” or more accurately with a protractor. Many … It is not possible to plot more than one distribution on same axes as histogram. In this process to adjust the frequencies we take a series of ‘moving’ or ‘running’ averages. ADVERTISEMENTS: Let us make an in-depth study of the graphical representation of statistical data. Draw a frequency polygon from the following data: In this graph we shall take the class intervals (marks in mathematics) in X axis, and frequencies (Number of students) in the Y axis. Data series. The horizontal axis is denoted as the x-axis and the vertical axis is denoted as the y-axis. These are Histogram, Smoothed frequency graph and Ogive or Cumulative frequency graph and pie diagram. 1. In this graph we shall take class intervals in the X axis and frequencies in the Y axis. The graph is easily understood by everyone without any prior knowledge. 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