1.1 What Is Statistics?

What do you think statistics is all about?

Statistics answers questions using data, or information about the situation. A statistic is a property of data, be it a number such as an average or a graph that displays information. Statistics—the discipline—is the science and art of extracting answers from data. Some of these answers do require putting numbers into formulas, but you can also do every statistical analysis with graphs and tables. It’s hard to be fooled when the answer stares you in the face.

Think of statistics as art. An artist must choose the right subject, and a good statistician finds the right picture. Rather than learning to paint, in this course you’ll learn how to use statistics ...

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