Selective serotonin reuptake inhibitor. Selective serotonin reuptake inhibitors (SSRIs), also known as serotonin-specific reuptake inhibitors or serotonergic antidepressants,[1] are a class of drugs that are typically used as antidepressants in the treatment of major depressive disorder and anxiety disorders.
Then you're looking for the midpoint! The midpoint of a line segment is the point located midway between the endpoints of the line segment. This tutorial tells you about the midpoint of a line segment.
First, we must find class midpoints. The class midpoint is the average of the lower class limit and upper class limit for that class. Once you have the class midpoints, you can enter numbers in the calculator. Press the STAT and the ENTER buttons to reach the display with L1, L2, L3 across the top.