test_fit | R Documentation |
The continuous variable of a GPT model is categorized into discrete bins to compute Pearsons X^2 between the predicted and observed bin frequencies.
test_fit(gpt_fit, breaks, bins = 6, statistic = "dn", lambda = 1)
gpt_fit |
a fitted GPT model (see |
breaks |
a list giving the breakpoints per category or a vector, in which case the same bounds are used for each category. By default, model-implied quantiles are used for each category. |
bins |
number of bins used to compute model-implied boundaries/quantiles. |
statistic |
a vector with labels of the statistic to be computed.
|
lambda |
Only relevant for |
Dzhaparidze, K., & Nikulin, M. (1974). On a modification of the standard statistics of Pearson. Theory of Probability & Its Applications, 19(4), 851-853. https://doi.org/10.1137/1119098
Read, T. R. C., & Cressie, N. A. C. (1988). Goodness-of-fit statistics for discrete multivariate data. New York, NY: Springer.
D'Agostino, R. B., & Stephens, M. A. (1986). Goodness-of-fit techniques. New York, NY: Marcel Dekker, Inc.
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