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measures of variation
Symbolic data differ from standard data in that they contain internal variation.
Yes, if there is no variation: all the data have to have the same value and that value must be non-zero.
What is data presentation on research
The coefficient of variation is a method of measuring how spread out the values in a data set are relative to the mean. It is calculated as follows: Coefficient of variation = σ / μ Where: σ = standard deviation of the data set μ = average of the data set If you want to know more about it, you can visit SilverLake Consulting which will help you calculate the coefficient of variation in spss.