Full View

Contents of What Does the Variance Formula Mean? (2)

What Does the Variance Formula Mean? (2)

• One of the definitions of the mean was that it always made the sum of the scores minus the mean equal to 0
• Thus, the average of the deviates must be 0 since the sum of the deviates must equal 0
• To avoid this problem, statisticians square the deviate score prior to averaging them
• Doing this makes all the squared scores positive