(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.
Mozilla Firefox is a popular browser that allows its users to use a variety of search engines, ranging from Google, Bing, and Yahoo to DuckDuckGo and more. Follow the steps below to set Google as the default search Engine for Firefox browser installed on your computer. 1. Open the Firefox browser on your computer and click on the 3 bar icon, located to the top right corner of your screen (See image in step#2 below).