April 2003
Intermediate to advanced
304 pages
4h 50m
English
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Chapter 3Measure
Measurement Reliability and Validity
Before trusting the information, it is important to verify that it is reliable and valid.
For our purposes, we will say that information is reliable if we obtain essentially the same information from more than one trusted source. For example, information on employee morale might be available from an employee focus group, employee interviews, and the annual employee survey.
We will say that information is valid if it covers the area of interest sufficiently well to accurately represent the area of interest. For example, if the process serves a seasonal market, the information should cover a complete business cycle, including the busy season and the slow season.
Dimensional Measurement Analysis ...
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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.