On 30/09/2009, at 3:45 AM, Lina Rusyte wrote:
Hello,
Could someone help me please and to tell how to get the probability
from empirical DENSITY (not parametric) for each data value (R
function).
For example, for normal distribution there is such a function like:
“dnorm(q, mean = 0, sd = 1, lower.tail = TRUE, log.p = FALSE)”
I need the same function only for the empirical DENSITY function
(which does not correspond to any typical distribution).
R plots the density function of any data:
“plot(density(x))”
I need to find out the probability for each data value from this
plot-line.
(1) Please be aware that these are ***NOT*** probabilities that you
after. The
values of a density function are, strange to tell, probability
***densities***
and not probabilties.
(2) Look at the help for density(). I.e., RTFM.
cheers,
Rolf Turner
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