上游充通大 ParisTech SHANGHAI JIAO TONG UNIVERSITY INSTITUT DES SCIENCES ET TECHNOLOGIES PARIS INSTITUTE OF TECHNOLOGY Sample Problem: Simple Statistics The standard deviation is a measure of how spread out the data is relative to the mean. If the data is tightly clustered around the mean, then the standard deviation is small.If the data is more spread out,the standard deviation is larger. The standard deviation is a yardstick to measure/express how exceptional the data is. 7Sample Problem: Simple Statistics • The standard deviation is a measure of how spread out the data is relative to the mean. • If the data is tightly clustered around the mean, then the standard deviation is small. If the data is more spread out, the standard deviation is larger. • The standard deviation is a yardstick to measure/express how exceptional the data is. 7