Division 4 CALCULATING THE VARIATION COEFFICIENTS OF THE ARITHMETIC MEANS

The variation coefficients of the arithmetic means shall be calculated using the following formulae:

Formula 3: $c_v=s_{x\overline{-}}∕x\overline{-}$

c_v

variation coefficient;

$s_{x\overline{-}}$

standard deviation of arithmetic mean [g CO₂/km];

$x\overline{-}$

arithmetic mean [g CO₂/km];

and

Formula 4: $s_{x\overline{-}}=\sqrt{\frac{\sum _{i=1}^n{\left(x_i-x\overline{-}\right)}^2}{n\left(n-1\right)}}$

$s_{x\overline{-}}$

standard deviation of arithmetic mean [g CO₂/km];

x_i

measurement value [g CO₂/km];

$x\overline{-}$

arithmetic mean [g CO₂/km];

n

number of measurements.