September 2026
Beginner
352 pages
9h 24m
English
Content preview from Grokking Statistics
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6 Coincidence? I think not!
In this chapter
- Intuition behind hypothesis testing and p-values
- Hypothesis testing for means, using two-tailed and one-tailed tests
- p-values and how to interpret them
- How to approach smaller samples and proportions with hypothesis testing
A hypothesis is a premise or claim we want to test, such as “Does my 305 mL can of soda really contain about 305 mL?” Just because the can advertises 305 mL (the null hypothesis, or the “status quo” claim) doesn’t mean that it is true. The competing claim, that the can does not contain about 305 mL, is called the alternative hypothesis. No can is going to have exactly 305 mL, of course, but we expect it to be close enough to that amount for the advertised claim to be valid. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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.