T1-5: Figures of Merit - Terms vs. Definition

Question 1

Absolute standard deviation, s

Answer 1

s = [ [SUM(i=1,N) (x.i - x.bar)^2]/(N-1) ]^1/2

Question 2

Relative standard deviation (RSD)

Answer 2

RSD = s/x

Question 3

Standard error of the mean, s.m

Answer 3

s.m = s/(N^1/2)

Question 4

Coefficient of variation (CV)

Answer 4

CV = (s/x)*100%

Question 5

Variance

Answer 5

s^2