Normal {base} | R Documentation |
These functions provide information about the normal distribution with
mean equal to mean
and standard deviation equal to sd
.
dnorm
gives the density, pnorm
gives the distribution
function qnorm
gives the quantile function and rnorm
generates random deviates.
dnorm(x, mean=0, sd=1) pnorm(q, mean=0, sd=1) qnorm(p, mean=0, sd=1) rnorm(n, mean=0, sd=1)
x,q |
vector of quantiles. |
p |
vector of probabilities. |
n |
number of observations. |
mean |
vector of means. |
sd |
vector of standard deviations. |
If mean
or sd
are not specified they assume the default
values of 0
and 1
, respectively.
The normal distribution has density
f(x) = 1/(sqrt(2 pi) sigma) e^-((x - mu)^2/(2 sigma^2))
where mu is the mean of the distribution and sigma the standard deviation.
runif
and .Random.seed
about random number
generation, and dlnorm
for the Lognormal distribution.
dnorm(0) == 1/ sqrt(2*pi) dnorm(1) == exp(-1/2)/ sqrt(2*pi) dnorm(1) == 1/ sqrt(2*pi*exp(1))