getsurvival | R Documentation |
Function getsurvival
calculates survival probability
from an object of class "density" at specified value.
getsurvival(x, cutoff)
x |
An object of class "density". |
cutoff |
Value at which survival probability will be calculated. |
The survival function S, of a random variable X
is defined by,
S(X=x) = 1 - F(X=x)
where F
is the cumulative density
function (CDF) of X
.
Survival probability.
getsurvival
is used internally in other function(s) of ROCit.
data("Loan")
k <- density(Loan$Income)
# What portion have income over 100,000
getsurvival(k,100000)
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