WCHS: Warren County High School (Warren County, Tennessee) WCHS: Warren Central High School (Indianapolis, Indiana) WCHS: White County High School: WCHS: Wesley Chapel High School (Wesley Chapel, FL) WCHS: Willow Canyon High School (Surprise, Arizona) WCHS: Western Canada High School (Calgary, Alberta Canada) WCHS: Wirt County High School (West Virginia) WCHS
Standard deviation is the average or mean of all the averages for multiple sets of data. Scientists and statisticians use the standard deviation to determine how closely sets of data are to the mean of all the sets.
Short-term standard deviation estimates the standard deviation within a data set subgroup, and is a measure of how widely values are dispersed from the average value (the mean) due only to the effect of common-cause variation. It is used to calculate Short-term Process Capability (i.e.: Cp and Cpk).