Petroleum pollution in oceans stimulates the growth of certain bacteria. An assessment of this growth has been made by counting the bacteria in each of

5

randomly chosen specimens of ocean water (of a fixed size). The

5

counts obtained were as follows.

56

,

61

,

64

,

59

,

50

Send data to calculator

Find the standard deviation of this sample of numbers. Round your answer to two decimal places.

(If necessary, consult alist of formulas.)