standard deviation

Standard Deviation

·         turn on calculator

·         press stat then enter

·         in list one place  # of sms per day  6,30,40,100,130,3,30,125,50,70,20,100,50,70,70,0,250,2

·         press 2^nd function

·         press stat

·         press calc

·         press enter

Answers:

Mean: 61.3583543

Median : 50

Mode: 70