| 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))