August 2008
Beginner
716 pages
16h 41m
English
Content preview from Head First Statistics
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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.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.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.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.
Chapter 12. Constructing Confidence Intervals: Guessing with Confidence
Sometimes samples don’t give quite the right result.
You’ve seen how you can use point estimators to estimate the precise value of the population mean, variance, or proportion, but the trouble is, how can you be certain that your estimate is completely accurate? After all, your assumptions about the population rely on just one sample, and what if your sample’s off? In this chapter, you’ll see another way of estimating population statistics, one that allows for uncertainty. Pick up your probability tables, and we’ll show you the ins and outs of confidence intervals.
Mighty Gumball is in trouble
The Mighty Gumball CEO has gone ahead with a range of television advertisements, and he’s proudly announced exactly how long the flavor of the super-long-lasting gumballs lasts for, right down to the last second.
Unfortunately...
Mighty Gumball used a sample of 100 gumballs to come up with a point estimator of 62.7 minutes for the mean flavor duration, and 25 minutes for the population variance. The CEO announced on primetime television that gumball flavor lasts for an average of 62.7 minutes. It’s the best estimate for flavor duration that could possibly have been made based on the evidence, but what if it gave a slightly wrong ...
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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.