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Statistics is a kind of data-compression - you start off with with a bag of data and you extract certain "features" such as averages, standard deviations etc... ...this allows you to say general things about the entire dataset (avg/SD, etc.) or claim associations between multiple datasets with varying degrees of confidence (correlations) or even predict the value of one variable if you know the other (regressions).
The dangerous thing is, if you are not careful about how you "compress" this data or about what you do or don't do with the dataset (like dealing with outliers), your conclusions may be ENTIRELY INVALID! By using specific examples, this book teaches you to look at what are you doing before you do the analysis and then how to look at your results after you do your compression (running statistical studies).
I was reluctant to buy this book at the bookstore at first, but after having read the entire text, I believe this investment was money well spent. If you don't believe me, check it out in a bookstore before you buy the book.
Good luck!
If you buy just one book on statistics, this should be it. If mathematics scares you, get this book. If you are interested in how and why statistics works, get this book. Lesen Sie weiter...
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