(1) Any attribute, phenomenon or event that can have different qualitative or quantitative values. Typically, a form of metadata goes with the variable, there is a variable definition that describes what is varying and there is a value for the variable. Variables are typically assessed in a clinical trial.
When you click a link for an email address or website, your Mac opens the app you've set for that kind of link. Mail is the default email app and Safari is the default web browser on your Mac. If you install other email apps or web browsers, you might want to set them to open when you click an email link or web link. Open the Mail app.
Microsoft Edge is the default web browser in Windows 10 when you upgrade, even if you had it set to Chrome or Firefox. While the Edge browser is much faster and intuitive than Internet Explorer, there are features that are missing.hange Windows 10 Default Web Browser. In the search field type: default browser and hit Enter. Or just click Choose a default browser from the top of the search results. That brings you directly to and the Web browser option is already highlighted. As you can see, Edge is currently set as the default.