Hello
In logistic regression after deciling using proc rank, I ran proc freq which returned below output
I am getting different frequencies in each decile, is it necessary that we should get equal number of frequencies in each decile?.
Thanks
You will not necessarily get identical numbers in each bin. See the example (and cautionary tale) in the article "Binning data by quantiles? Beware of rounded data!"
Necessary for what? Use the GROUPS= option in PROC RANK if you want to have equal frecuencies in your groups
Small example
proc rank data=sashelp.cars out=carsRanked groups=10;
var invoice;
ranks group;
run;
proc freq data = carsRanked;
tables group / nocum;
run;
You will not necessarily get identical numbers in each bin. See the example (and cautionary tale) in the article "Binning data by quantiles? Beware of rounded data!"
Thank you very much.
Lets say I want to calculate expected defaults(Y=0), I have 8417/16880=0.499 zeros, then can I say that the expected defaults is 2044*0.499=1019.956 for the decile 4?.
Thank you.
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