上游充通大 ParisTech SHANGHAI JIAO TONG UNIVERSITY INSTITUT DES SCIENCES ET TECHNOLOGIES PARIS INSTITUTE OF TECHNOLOGY Sample Problem: Simple Statistics As you can see,calculating the standard deviation not only requires the mean (which can't be calculated until all the data is entered), but also each individual data element! We need some way to remember these values as they are entered. 10Sample Problem: Simple Statistics • As you can see, calculating the standard deviation not only requires the mean (which can‟t be calculated until all the data is entered), but also each individual data element! • We need some way to remember these values as they are entered. 10