Description Usage Arguments Value Functions Note Author(s) See Also Examples
View source: R/helper_functions.R
Fits a beta distribution based on quantiles
1 2 3 | fitbeta_ml(point, lci, uci)
fitbeta(point, lci, uci)
|
point |
Point estimates corresponding to the median |
lci |
Lower limit (quantile 0.025) |
uci |
Upper limit (quantile 0.975) |
parameters shape1 and shape2 of a beta distribution
fitbeta_ml
: using ML to estimate parameters
fitbeta
: preserve the expected value
This is a wrap of the fitdist
to obtain
the best parameters for a beta distribution based
on quantiles.
When using confidence intervals (not ML), the shape parameters are obtained using the following formula:
varp = (p_uci-p_lci)/4^2
shape1 = p_mean * (p_mean * (1 - p_mean) / varp - 1)
shape2 =(1 - p_mean) * (p_mean * (1 - p_mean) / varp - 1)
John J. Aponte
1 2 | fitbeta_ml(0.45,0.40,0.50)
fitbeta(0.45,0.40,0.50)
|
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