Coefficient Of Variation
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8 Terms
CV
= s/x x 100%
what is the mean, standard deviation and variance influenced by ?
extreme values
what is the IQR influenced by ?
Percentiles
What is the best measure of variability when the data are symmetrical
The variance or standard deviation is the best measure of variability
What is the best measure of variability when the data are skewed (in any direction)
The IQR is the best measure of variability
What is the best measure of variability when comparing variation between two samples that are unrelated or that contain observations that are measured in different units
The coefficient of variation
What is the coefficient of variation (CV)
A measure of relative variation specifically variation relative to the mean, and is used to compare samples of data from different variables.