I have four data sets with probability density function (PDF)s as shown in the figure. Each of the PDFs has different mean (near to zero) and different variance. I want to derive the rate of change in the variances. One of my thought is 1. Take log of each PDF 2. Take first derivative to see where is the maximum 3. Take Full Width Half Maximum (FWHM) 4. Then calculate the rate of change
But I am not sure if I am in the right track? Please help.
