With reference to Exercise 2.68,

(a) find the quartiles;

(b) find the minimum, maximum, range, and interquartile range;

(c) construct a boxplot.

Data From Exercise 2.68 

2.68 An electric engineer monitored the flow of current in a circuit by measuring the flow of electrons and the re- sistance of the medium. Over 11 hours, she observed a flow of 5 12 8 16 13 10 9 11 14 7 8 amperes. (a) Create a dot diagram. (b) Find the median and the mean. Locate both on the dot diagram. (c) Find the variance and the standard deviation.