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All functions

composite_covariance()
Computes covariances of composite scores given a covariance matrix and a weight matrix
composite_score()
Compute composite score
conditional_covariance()
Conditional Covariance
difference_score()
Difference score statistics
logit2w()
Convert logits to W scores
multivariate_ci()
General a multivariate confidence interval for a set of scores
rpi()
Convert ability (in W scores by default) to relative proficiency index
w2logit()
Convert W scores to logits
w2p()
Convert W scores to a probabilities
x2standard()
Convert x to a standard score