TITLE(qqnorm @@ Normal Quantile-Quantile Plots)
USAGE(
qqnorm(y, DOTS)
qqline(y, DOTS)
qqplot(x,y, plot.it = T, DOTS)
)
ALIAS(qqnorm)
ALIAS(qqplot)
ALIAS(qqline)
DESCRIPTION(
LANG(qqnorm) produces a normal QQ plot of the values in LANG(y).
LANG(qqline) adds a line to a normal quantile-quantile plot
which passes through the quartiles.
PARA
Graphical parameters may be given as arguments to LANG(qqnorm), LANG(qqnorm)
and LANG(qqline).
)
SEEALSO(
LANG(LINK(ppoints)).
)
EXAMPLES(
y <- rt(200, df=5)
qqnorm(y); qqline(y, col=2)
qqplot(y, rt(300, df=5))
data(precip)
qqnorm(precip, ylab = "Precipitation [in/yr] for 70 US cities")
)
