d bar statistics

Comparing center and spread: within group, between group variation Comparing clusters and gaps Comparing outliners and other unusual features Comparing shapes Exploring bivariate data: Analyzing patterns in scatterplots Correlation and linearity Least-squares regression line Resi..

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Graphical Representation..

Bar Graphs - This is the simplest type of graphical presentation of data. The following types of bar graphs are possible: (a) Simple bar graph (b) Double bar graph (c) Divided bar graph We will illustrate each of these graphs by the following illust..

This is the simplest type of graphical presentation of data. The following types of bar graphs are possible: (a) Simple bar graph (b) Double bar graph (c) Divided bar grap..

Double bar or divided bar graph is preferred when we want to compare two sets of related data. An officer with a monthly salary of Rs. 7200 plans his budget for a month as given below: Represent this data by a bar graph. This data can be represented by a ..

Summary - The mean deviation (M.D) of a statistical data is defined as the arithmetic mean of the numerical values of the deviations of the items from some average. For an individual series, For a frequency distribution, If M.D is calculated about mean, then it is writ..

If a = assumed mean, then take the deviations of the items from a and call it d..

In a simple bar graph, the height of each bar represents the frequency. The thickness has no significance. All bars to have the same thickness. We use double bar graph when we want to compare two things. In the pie chart, In the frequency polygon..