April 2026
Beginner
288 pages
5h 34m
English
Content preview from Probability Workbook For Dummies
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Chapter 19
Top Ten Probability Mistakes
IN THIS CHAPTER
Becoming aware of what probability can and can’t do
Clearing up some of the most common probability misconceptions
Taking a gamble on the wrong idea in gaming
Probability may seem intuitive on the surface — and some of it is. However, some of it isn’t. Many mistakes can be made if you don’t understand what’s really going on behind the scenes. In this chapter, you take a look at some of the most common probability errors and misconceptions that can happen to anyone, just because of the nature of probability. It’s not the easiest subject in the world; however, clearing up common pitfalls will help you raise the bar on your level of understanding and help you avoid problems down the road.
Forgetting Where Probabilities Live
Probabilities have strict rules, and you always need to check when you are finished with a problem to make sure those rules are being followed. The two biggest rules of probability are:
- Each probability lies between 0 and 1.
- The sum of all the probabilities of all the outcomes in the sample space, S, must be 1.
A famous statistician I know has a framed picture in his office of a problem from one of the ...
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I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.