Statistics
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Statistics is about collection of information and its presentation and about drawing inferences from these. We come across facts and figures in the newspapers, Television and the radio. The numerical figures are called "the data". If we have to draw good inferences from information collected, it has to be presented properly. We shall now study how the data collected is tabulated.
The collection of data, its classification, tabulation and study is called Statistics.
Graphical Representation
The graphical representation of data makes the reading more interesting, less time-consuming and easily understandable. The disadvantage of graphical presentation is that it lacks details and is less accurate. In our study, we have the following graphs: 1. Bar Graphs 2. Pie Charts 3. Frequency Polygon 4. Histogram.![]() |
Permutations and Combinations
The different arrangements that can be made with a given number of things taking some or all of them at a time are called permutations.The selection of a number of things taking some or all of them at a time are called combinations.

