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Head first statistics /
Wouldn't it be great if there were a statistics book that made histograms, probability distributions, and chi square analysis more enjoyable than going to the dentist? Head First Statistics brings this typically dry subject to life, teaching you everything you want and need to know about statis...
| Clasificación: | Libro Electrónico |
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| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Sebastopol, Calif. :
O'Reilly,
2008, ©2009.
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| Temas: | |
| Acceso en línea: | Texto completo (Requiere registro previo con correo institucional) |
Tabla de Contenidos:
- Table of Contents; Introduction: how to use this book; Who is this book for?; We know what you're thinking; We know what your brain is thinking; Metacognition: thinking about thinking; Here's what WE did; Here's what YOU can do to bendyour brain into submission; Read Me; The technical review team; Acknowledgments; Safari® Books Online; Chapter 1: visualizing information: First Impressions; Statistics are everywhere; But why learn statistics?; A tale of two charts; Manic Mango needs some charts; The humble pie chart; Chart failure; Bar charts can allow for more accuracy; Vertical bar charts.
- Horizontal bar chartsIt's a matter of scale; Using frequency scales; Dealing with multiple sets of data; Your bar charts rock; Categories vs. numbers; Dealing with grouped data; To make a histogram, start by finding bar widths; Manic Mango needs another chart; Make the area of histogram bars proportional to frequency; Step 1: Find the bar widths; Step 2: Find the bar heights; Step 3: Draw your chart-a histogram; Histograms can't do everything; Introducing cumulative frequency; Drawing the cumulative frequency graph; Choosing the right chart; Manic Mango conquered the games market!
- Chapter 2: measuring central tendency: The Middle WayWelcome to the Health Club; A common measure of average is the mean; Mean math; Dealing with unknowns; Back to the mean; Handling frequencies; Back to the Health Club; Everybody was Kung Fu fighting; Our data has outliers; The outliers did it; Watercooler conversation; Finding the median; Business is booming; The Little Ducklings swimming class; What went wrong with the mean and median?; Introducing the mode; Congratulations!; Chapter 3: measuring variability and spread: Power Ranges; Wanted: one player; We need to compare player scores.
- Use the range to differentiate betweendata setsThe problem with outliers; We need to get away from outliers; Quartiles come to the rescue; The interquartile range excludes outliers; Quartile anatomy; We're not just limited to quartiles; So what are percentiles?; Box and whisker plots let you visualize ranges; Variability is more than just spread; Calculating average distances; We can calculate variation with the variance ... ; ... but standard deviation is a more intuitive measure; A quicker calculation for variance; What if we need a baseline for comparison?
- Use standard scores to compare values across data setsInterpreting standard scores; Statsville All Stars win the league!; Chapter 4: calculating probabilities: Taking Chances; Fat Dan's Grand Slam; Roll up for roulette!; Your very own roulette board; Place your bets now!; What are the chances?; Find roulette probabilities; You can visualize probabilities with a Venn diagram; And the winning number is ... ; Let's bet on an even more likely event; You can also add probabilities; You win!; Time for another bet; Exclusive events and intersecting events; Problems at the intersection.