Ø The statistical graphs were first invented by William Playfair in 1786. Ø Graphical Representation: It is the representation or presentation of data as Diagrams and Graphs. Data charts are available in a wide variety of maps, diagrams, and graphs that typically include textual titles and legends to denote the purpose, measurement units, and variables of the chart. Line or Dot Plots Line plots are graphical representations of numerical data. Our eyes are drawn to colors and patterns. The purpose of a graph is a rapid visualization of a data … Ø In graphical data … Graphical representation refers to the use of intuitive charts to clearly visualize and simplify data sets. A line plot is a number line with x’s placed above specific numbers to show their frequency. Now, we have to write the points from less than and more than cumulative frequency as given below. We use Multiple line chart for representing two or more related time series data expressed in the same unit and multiple – axis chart in somewhat similar situations, if the variables are expressed in different units. Besides textual and tabular presentations of statistical data, the third and perhaps the most attractive... Line Diagrams:. Data only has value once its significance has been revealed and consumed, and its consumption is best facilitated with graphical representation tools that are designed with human cognition and perception in mind. The graphical representation is the visual display of data using plots and charts. Typically, bar charts are created with qualitative data (nominal or ordinal variables) while histograms are created with quantitative data (interval-ratio variables). =  [Value of the component / Total value] x 360°. By plotting cumulative frequency against the respective class boundary, we get ogives. Let us denote these class intervals along the X-axis. Stellar data, or information such as location of stars were visualized on th… Graphical Representation -visual display of data and statistical results. That is, in histogram rectangles are erected on the class intervals of the distribution. Thank you! Representational graphics can quickly illustrate general behavior and highlight phenomenons, anomalies, and relationships between data points that may otherwise be overlooked, and may contribute to predictions and better, data-driven decisions. Frequency Polygons A frequency polygon is a graph … rectangles of equal width and usually of varying lengths are drawn either, We consider Multiple or Grouped Bar diagrams to compare, related series. The types of representational graphics used will depend on the type of data being explored. Finally, we use Divided Bar charts or Percentage, Bar diagrams for comparing different components of a variable and also the relating of, the components to the whole. Bars i.e. Our culture is visual, including everything from art and advertisements to TV and movies. It shows a diagram of the relationship between knowledge, ideas, information, and concepts. Ogives or Cumulative frequency grap… A bar graph uses bars or rectangles of the same width but different heights to represent different values of data. Apart from the stuff given above, if you need any other stuff in math, please use our google custom search here. It can be written as a point (2002, 5). Now, plotting all these point and joining them using ruler, we can get the line diagram. Disadvantages of Graphical Representation of Data. When we see a chart, we quickly see trends and outliers. Graphical Re­presentation of Statistical Data Introduction:. There are two types of bar diagrams namely, Horizontal Bar diagram and Vertical bar diagram. Let us consider years on horizontal axis and profits on vertical axis. 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