In a previous exercise you calculated the mean of a sample of 20 vials:

50.64	47.55	50.62	60.00	50.67
49.11	52.22	57.40	62.58	51.14
45.41	56.86	53.77	48.53	49.59
43.91	51.17	54.28	46.99	58.41

Calculate the standard deviation of the salinity. If possible use Excel. The function is:

spreadsheet