In research, examining variables is a major part of a study. There are three main types of variables: continuous variables can take any numerical value and are measured; discrete variables can only take certain numerical values and are counted; and categorical variables involve non-numeric groups or categories. To unlock this lesson you must be a Study.com Member.
Tomoson.com is a service to find bloggers who are interested in doing product reviews or where bloggers can find products that they would like to review. Itâs currently in beta and free, but once out of beta, I expect that there will probably be some type of paid account required.
Tomcat is an open-source project which provides the official reference implementation of the Java Server Pages (JSP) and Java Servlets technologies. In other words, Tomcat serves dynamic web content based on Java technology, and the way it does it is the way it should be done (for Java).Tomcat is just one of many tools in the Apache Software Foundation. Other useful tools are: 1  ant -- a Java-based software-build tool.ou create your JSP code or servlets, write some web pages in HTML to reference them, compile everything, deploy it to Tomcat (which encapsulates it in a container), and test it via a web browser. For general servlet development information, see the Application Developer's Guide.