ability function

Estimate ability

A wrapper around all functions for ability estimation

ability(resp, ip, method = "WLE", mu = 0, sigma = 1, n = 5)

Arguments

• resp: A matrix of responses: persons as rows, items as columns, entries are either 0 or 1, no missing data
• ip: Item parameters: the object returned by $est$.
• method: One of: "MLE", "BME", "WLE", "EAP", "PV", "QRS", "SUM"
• mu: Mean of the apriori distribution when applicable
• sigma: Standard deviation of the apriori distribution when applicable method="ML". Default is 1.
• n: The number of plausible values to draw for each person (default is 5).

Returns

Depends on the method.

Examples

theta <- ability(resp=Scored, method="WLE", ip=Scored2pl)

See Also

mlebme, eap, wle, dpv, qrs

Author(s)

Ivailo Partchev