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.
The Standard Deviation is a measure of how spread out numbers are. You might like to read this simpler page on Standard Deviation first. But here we explain the formulas. The symbol for Standard Deviation is Ï (the Greek letter sigma). This is the formula for Standard Deviation: