Standard Deviation in Normal Distribution is Zero!
Normal distribution - Wikipedia, the free encyclopedia
The very first formula you see, i'm having to use that.
Basically i'm writing a program for Naive Bayes Classifier.
One of the classes has a standard deviation of zero.
Now, i can't divide by Zero...so if something has a S.D is zero, i gather that all value's must equal the mean(which in my case annoyingly is also zero).
So, if the SD is zero, how can i use the formula there?