Book(cm) 28.1 28.2 28 28.1 28.2 28.1 28.4 28 28 28.1 28.1 28.2 Average 28.125 Calculation: (28.1 + 28.2 + 28 + 28.1 + 28.2 + 28.1 + 28.4 + 28 + 28 + 28.1 + 28.1 + 28.2) / 12 Standard Deviation 0.1138180366 Calculation: sqrt((28.1 - 28.125)^2 + (28.2 - 28.125)^2 + (28 - 28.125)^2 + (28.1 - 28.125)^2 + (28.2 - 28.125)^2 + (28.1 - 28.125)^2 + (28.4 - 28.125)^2 + (28 - 28.125)^2 + (28 - 28.125)^2 + (28.1 - 28.125)^2 + (28.1 - 28.125)^2 + (28.2 - 28.125)^2) Stdev of mean 0.1138180366 / sqrt(12) 0.03285643703 Calculation: Caliper Wire(mm) Average Micrometer 0.72 Caliper 0.915 Small cylinder(mm) Micrometer 12.76 12.709 0.71 0.9 12.95 12.711 0.68 0.91 12.62 12.709 0.66 0.915 12.43 12.707 0.62 0.922 12.66 12.709 0.79 0.926 12.68 12.715 0.68 0.925 12.59 12.707 0.62 0.931 12.62 12.706 0.86 0.931 12.52 12.709 0.71 0.932 12.52 12.707 0.61 0.924 12.51 12.704 0.58 0.924 12.62 0.6866666667 0.92125 Average 12.62333333 12.711 12.70866667 Standard Deviation0.07969639359 0.009602319795 Standard Deviation 0.135735929 0.002839120649 Stdev of mean 0.02300636715 0.002771950959 Stdev of mean 0.03918358758 0.0008195835355 100g weight m1a m2d Average Stdev of mean 0.005 m2a m1d 100.15 100.14 100 100 100.16 100.1 100 100.1 100.13 100.09 100 100 100.14 100.09 100 100 100.12 100.1 100 100 100.13 100.08 100 100 100.13 100.1 100 100 100.12 100.09 100 100 100.135 100.09875 100 100.0125 0.006391260774 0 0.0125