A bar graph can be defined as a pictorial representation of a set of carefully selected information showing a comparison among them in the form of spaced-out bars. It exhibits the relation between data, ideas, information and concepts in a diagram. Draw a subdivided bar diagram using the following data. • Rose diagram: It is similar to histogram, by constructed as a rose shape on a circular diagram . ÃÂ The width of the bars and the space between them are kept constant. Module 6: Unit 3 Data representation57 Unit 3: Data representation Introduction to Unit 3 In this unit you will look at different ways to represent data in tables, charts, graphs and diagrams. The areas of rectangle are proportional to the frequencies. Matplotlib: Histogram. In general the number of types of tabulation [] a. The word graph is sometimes used as a synonym for diagram. Diagrammatic representation of data : An attractive representation of statistical data is provided by charts, diagrams and pictures. diagrammatic and graphical representation of data 1. histogram a diagrammatic representation of a FREQUENCY DISTRIBUTION, consisting of contiguous rectangles displaying interval-level data (see CRITERIA AND LEVELS OF MEASUREMENT) grouped into categories.In a histogram the width of the rectangle is proportional to the class interval under consideration, and the height is the associated frequency. ÃÂ Corresponding frequencies are taken on the Y axis. ÃÂ Bars are drawn vertically or horizontally with equal spacing between them. The best method of presentation of data is [] a. Textual b. Tabular c. Diagrammatic d. (b) and (c) 17. Example: Number of science graduate students in a college is given below. Example: A study on the number of accidents in the year 2015 in a particular area is given below. ÃÂ Makes the presentation eye-catching. ÃÂ Percentage bar diagram is a diagram which exhibits a simple analysis of statistical data in terms of percentage. ÃÂ The height of the line denotes the magnitude of the observation / class. Histograms can display a large amount of data and the frequency FREQUENCY Function The Frequency Function is categorized under Excel Statistical functions. Start studying Diagrammatic and Graphical Representation of Data - Statistics. ÃÂ Class intervals used are usually of equal width. The diagram is a relative frequency histogram for the data, and is shown in Figure \(\PageIndex{4}\). To construct a histogram, the first step is to " bin " (or " bucket ") the range of values—that is, divide the entire range of values into a series of intervals—and then count how many values fall into each interval. As they both use bars to display data, people find it difficult to differentiate the two. Frequency Curve Things to remember in Graphical Representation Methods. Histogram 2. ÃÂ If more than one graph is used in the study, all graphs should be numbered chronologically. In histogram, the bars are placed continuously side by side with no gap between adjacent bars. Disadvantages of Graphical Representation of Data. ÃÂ Each bar consists of several compartments. (Diagrammatic Data Representation: Line Chart, Bar Diagrams and Histogram) Graphical Representation of Data / Variables Ø The data presentation in statistics may be Numerical or Graphical. Histogram is the most common form ofdiagrammatic representation of a grouped frequencydistribution. We willÂ not spam your account… Economics Grade XI Histogram - Diagrammatic and Graphical Representation of Data The histogram is the graphical presentation of the continuous frequency distribution drawn by the help of rectangular vertical bars whose heights represent the frequencies of the classes. Ø If the data is presented in the numerical form, it will not attract the attention of the audience. 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