2 1 An important quality characteristic of water is the concentration of suspended solid material in mg l Twelve measurements on suspended solids from a certain lake are as follows 42 4 65 7 29 8 58 7 52 1 55 8 57 0 68 7 67 3 67 3 54 3 and 54 0 Calculate the sample average and sample standard deviation Construct a dot diagram of the data first y 126 Calcu Const 2 5 on vis