I agree. It's pretty important. Missing values can be coded as funny things like minus infinity in some languages. So then, if you want to assign a subset of a vector to a new group (say the number of people who have…
I agree. It's pretty important. Missing values can be coded as funny things like minus infinity in some languages. So then, if you want to assign a subset of a vector to a new group (say the number of people who have…