3 _ Shown below is the number of delinquent acts committed by a group of 20 juveniles. Class Limits 5-9 10-14 15-19 20-24 5 4 3 5 3 a. Calculate the variance and standard deviation for the number of delinquent acts does this tell you? What Stated Limits 5-9 10-14 15-19 20-24 Real Limits 5 4 5