The bore diameters of eight randomly selected bearings are shown here (in mm): 50.001,

50.002, 49.998, 50.006, 50.005, 49.996, 50.003, 50.004

(a) Calculate the sample average

(b) Calculate the sample standard deviation

50.002, 49.998, 50.006, 50.005, 49.996, 50.003, 50.004

(a) Calculate the sample average

(b) Calculate the sample standard deviation