Mathematics







Statistical Graphs

These are three of the most common statistical graphics; in fact, they are ubiquitous. Each is used for a different purpose. The most common use of a bar graph is to show the relationship between a categorical variable and a…
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Sudoku Puzzles

Sudoku is a great puzzle, but it is not about mathematics at all. To see this, note that you could substitute the letters A through I for the numbers 1 through 9, and you will have the same puzzle. The…
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