March 2015
Beginner to intermediate
396 pages
10h 23m
English
Content preview from Improving the User Experience through Practical Data AnalyticsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 6
Comparing more than two means
One factor ANOVA with independent samples. Multiple comparison testing with the Newman-Keuls test
Abstract
This chapter explains how to compare means when you have more than two. For example, you may be comparing the average ratings of ease-of-use for the different tasks that you just asked participants to complete in a usability test. Or, you could be comparing attractiveness of a specific design across different age brackets. Or, you may be comparing more than two task-completion times from a usability test. In all these cases, we use what is called a one-factor analysis of variance (ANOVA). This chapter discusses and illustrates this ANOVA technique, and goes into detail instructing the reader on how to ...
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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.