The coefficient of variation should be computed only for data measured on a ratio scale, as the coefficient of variation may not have any meaning for data on an interval scale. Using relative values instead of absolute values can cause the formula to give an incorrect answer.
Of course it is! If the mean of a set of data is negative, then the coefficient of variation will be negative.
Of course it is! If the mean of a set of data is negative, then the coefficient of variation will be negative.
0% to 100%
Yes it is. If all the observations have the same non-zero value then the coefficient of variation will be zero.
A correlation coefficient can only range from -1.0 to 1.0 so a 50 is not possible. Did you mean .5?
Inter-quartile range, other percentile ranges, mean absolute variation, variance, standard error, standard deviation are all possible measures.
No. "Absolute" means non-negative.
15
No. Correlation coefficient is measured from +1 to -1. In addition, if the two sets of exam are exactly same, their correlation coefficient is +1.
"Nothing is absolute, everything is relative"... Einstein
Disciplinary variation is quite simply the variety of subjects that a student can take or that it is possible to take.
Yes, it is possible.