Editing Content :: Admin Scraper

Chapter

Content type

Position

Value

PRESENTATION OF DATA 51 continuous they are first converted into bars (except in multiple bar or continuous classes as discussed in component bar diagram). Although the Chapter 3. Sometimes the common bars have the same width, the width of portion between two adjacent a bar is unimportant for the purpose rectangles (Fig.4.6) is omitted giving a of comparison. The width in a better impression of continuity. The histogram is as important as its height. resulting figure gives the impression of We can have a bar diagram both for a double staircase. discrete and continuous variables, but A histogram looks similar to a bar histogram is drawn only for a diagram.Buttherearemoredifferences continuous variable. Histogram also than similarities between the two than gives value of mode of the frequency it may appear at the first impression. distribution graphically as shown in The spacing and the width or the area Figure 4.5 and the x-coordinate of the of bars are all arbitrary. It is the heigdotted vertical line gives the mode. and not the width or the area of the bar thatreallymatters. Asingleverticalline Frequency Polygon could have served the same purpose A frequency polygon is a plane as a bar of same width. Moreover, in bounded by straight lines, usually four histogram no space is left between two or more lines. Frequency polygon is an rectangles, but in a bar diagram some alternative to histogram and is also space must be left between consecutive derived from histogram itself. A Fig. 4.5: Histogram for the distribution of 85 daily wage earners in a locality of a town. Reprint 2026-27