fa {riskyr} | R Documentation |
Frequency of false alarms or false positives (FP).
Description
fa
is the frequency of false alarms
or false positives (FP
)
in a population of N
individuals.
Usage
fa
Format
An object of class numeric
of length 1.
Details
Definition:
fa
is the frequency of individuals for which
Condition = FALSE
and Decision = TRUE
(positive).
fa
is a measure of incorrect classifications
(type-I-errors), not an individual case.
Relationships:
to probabilities: The frequency
fa
depends on the false alarm ratefart
(aka. false positive rate, FPR) and is conditional on the prevalenceprev
.to other frequencies: In a population of size
N
the following relationships hold:
See Also
fart
is the probability of false alarms
(aka. false positive rate FPR
or fallout
);
num
contains basic numeric parameters;
init_num
initializes basic numeric parameters;
freq
contains current frequency information;
comp_freq
computes current frequency information;
prob
contains current probability information;
comp_prob
computes current probability information;
is_freq
verifies frequencies.
Other essential parameters:
cr
,
hi
,
mi
,
prev
,
sens
,
spec
Other frequencies:
N
,
cond_false
,
cond_true
,
cr
,
dec_cor
,
dec_err
,
dec_neg
,
dec_pos
,
hi
,
mi