What is coefficient of quartile deviation?
coefficient of quartile deviation: (Q3-Q1)/(Q3+Q1)
describe the properties of the standard deviation.
standard deviation only measures the average deviation of the given variable from the mean whereas the coefficient of variation is = sd\mean Written as "cv" If cv>1 More variation If cv<1 and closer to 0 Less variation
no
What is coefficient of quartile deviation?
coefficient of quartile deviation: (Q3-Q1)/(Q3+Q1)
describe the properties of the standard deviation.
the relative measures of the mean deviation to the average about which it is calculated,i.e. arithmetic mean.
coefficient of quartile deviation is = (q3-q1)/(q3+q1)
It depends on what the underlying distribution is and which coefficient you want to calculate.
standard deviation only measures the average deviation of the given variable from the mean whereas the coefficient of variation is = sd\mean Written as "cv" If cv>1 More variation If cv<1 and closer to 0 Less variation
no
Coeff of Variation = Mean/SD
Suppose the mean of a sample is 1.72 metres, and the standard deviation of the sample is 3.44 metres. (Notice that the sample mean and the standard deviation will always have the same units.) Then the coefficient of variation will be 1.72 metres / 3.44 metres = 0.5. The units in the mean and standard deviation 'cancel out'-always.
The coefficient of variation is the ratio between the standard deviation and the mean.
skewness=(mean-mode)/standard deviation