A sample of 3 measurements are taken and recorded: x = 5, y = 6 and z = 9 The sample mean is: x = xctytz 3 = 6.67 Fill in the table below. ai (ai - x) Ex: 5.34 y Ex: 5.34 2 Ex: 5.34 (20 - 2) -+(-20)2 +(2-20)2 = 2 Ex: 5.34 (ac - a") " + ( y-20)2+(2-20)2 S 2 Ex: 5.34