I have two data sets, one data set contains value in the range of 10,000- 1,000,000 and other data set contains the value between 1,000-10,000. I want to compare the variability means,which data has more variability.
Do I need to first standardized / normalized the data and then compare the variance, but standardization will give me mean 0 and variance 1.
Also, which is better Coefficient of variation or Interquartile Range
Thanks in advance