Draw the parts of an estimation from eap_map():
plot_prior()the prior weights at the quadrature points;
plot_tracelines()the probability of each observed response across ability, blue for items answered correctly and red for items answered incorrectly;
plot_likelihood()the likelihood, the product of those probabilities;
plot_posterior()the posterior, with lines and values for the EAP (blue) and the MAP (red);
plot_eap_combined()the prior (red), likelihood (blue) and posterior (black, rescaled to be comparable) in one plot, with dashed lines at the prior mean and the posterior mean.
Usage
plot_prior(estimate)
plot_tracelines(estimate)
plot_likelihood(estimate)
plot_posterior(estimate)
plot_eap_combined(estimate)Arguments
- estimate
Result of
eap_map().
Examples
estimate <- eap_map(response_pattern(2))
plot_prior(estimate)
plot_tracelines(estimate)
plot_likelihood(estimate)
plot_posterior(estimate)
plot_eap_combined(estimate)