A+ Answer

use the ten step "deviation method" to compute the standard deviation for the five scores below. Write a name and letter symbol for the measure in each step. Show the computations for all steps. Compute the z-scores for the data. Show the computations

                  Observed Value       Deviation                 Squared Deviation

Name        X                              (X – Xbar)               (X – Xbar)²       

Alice         16                             16 – 10 = 6               6 * 6 = 36

Beth          12                             12 – 10 = 2               2 * 2 = 4

Carl           10                             10 – 10 = 0               0 * 0 = 0

Dave          8                               8 – 10 = -2               -2 * -2 = 4

Erma         4                               4 – 10 = -6               -6 * -6 = 36

Total         50                                                              80