I have a set of data (metallicity of globular clusters) and wish to determine the presence of two sub-populations. I know there are two populations but I am unsure on how to split the two.
I have plotted a histogram of the data (metallicity vs number). Is there any method aside from sight, to determine the two populations?
FeH Frequency 0 4 -0.2 6 -0.4 14 -0.6 15 -0.8 6 -1 15 -1.2 22 -1.4 23 -1.6 19 -1.8 15 -2 8 -2.2 5