binomial_pi: Calculates the percentile interval for the probability...

Description Usage Arguments Value Author(s) Examples

Description

Calculates the percentile interval for the probability parameter underlying a binomially distributed outcome.

Usage

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binomial_pi(n_successes, n_trials, prob, prior_shape1 = 1, prior_shape2 = 1)

Arguments

n_successes

The number of successes.

n_trials

The total number of trials.

prob

The size of the percentile interval with 0 <= prob <= 1.

prior_shape1

The shape1 parameter of the Beta distribution defining the prior. The default values shape1=1 and shape2=1 define a flat prior assigning equal probability density to all possible parameter values.

prior_shape2

The shape2 parameter of the Beta distribution defining the prior. The default values shape1=1 and shape2=1 define a flat prior assigning equal probability density to all possible parameter values.

Value

A vector containing the endpoints of the percentile interval.

Author(s)

Titus von der Malsburg <malsburg@uni-potsdam.de>

Examples

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# 6/9 successes with flat prior:
binomial_pi(6, 9, 0.8)

# 6/9 successes with prior assuming one prior success and one failure:
binomial_pi(6, 9, 0.8, 2, 2)

# Equivalently:
binomial_pi(7, 11, 0.8)

tmalsburg/binomialCRIs documentation built on May 29, 2019, 5:41 a.m.