October 2007
Beginner
205 pages
5h 32m
English
Content preview from Your Next Great Stock: How to Screen the Market for Tomorrow's Top PerformersBecome 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 7. How to Use a Screening Tool
The perfect temperature for brewing coffee is between 195 and 200 degrees Fahrenheit. I'm pretty sure of that. I run something of a coffee laboratory out of my kitchen. I use terms like roast curve, dosing, and extraction. I don't yet say cupping instead of drinking, but I'm getting close.
Let's say you're in the market for a new coffee maker and you want one with the right brew temperature. (We'll assume you haven't yet discovered that low-tech brewers like press pots and vacuum pots are better than drip coffee makers, and that pressure brewing with an espresso-style machine is better still.) You go online and start searching through models, all the while looking for the following clue:
Brew temperature in degrees Fahrenheit is between 195 and 200.
The Three Parts of Any Clue
The three main elements to stock screening are all contained in your coffee maker clue. There's the variable (brew temperature in degrees Fahrenheit), the relationship (between), and the value (195 and 200).
The Variable
The variable is the piece of information you're making a demand on. Note that the variable just given contains both the data point you're looking for (brew temperature) and the unit of measurement (degrees Fahrenheit). Screeners sometimes have hundreds of variables to choose from. We'll look at many of them in the next chapter. Since there are so many variables for users to choose from, they're generally divided into categories and subcategories. Often, this ...
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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.