Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Schema of the four steps followed to enter the data. Four steps must be done before analyzing the data. Those are thought to identify and define the experiment, set up the comparisons to do, and join them in a logical expression. Finally, the data are analyzed, and the results delivered by mail to the researcher
