Variability statistics question

Question

Calculate SS(sum of squares), variance, and standard deviation for the following population of scores: 3,1,4,3,3,4

Answer 1

3+1+4+3+3+4 = 18

n=6

mean = 18/6 = 3

3-1= 2 2^2 = 4

3-4 = -1 -1^2 = 1

3-4= -1 -1^2 = 1

3-3=0

3-3=0

3-3=0

SS = 4+1+1= 6

variance = 6/n= 6/6= 1

standard deviation = sqr1 = 1