JMP 14.0 Online Documentation (English)
Discovering JMP
Using JMP
Basic Analysis
Essential Graphing
Profilers
Design of Experiments Guide
Fitting Linear Models
Predictive and Specialized Modeling
Multivariate Methods
Quality and Process Methods
Reliability and Survival Methods
Consumer Research
Scripting Guide
JSL Syntax Reference
JMP iPad Help
JMP Interactive HTML
Capabilities Index
JMP 13 Online Documentation
JMP 12 Online Documentation
Multivariate Methods
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Item Analysis
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Statistical Details for the Item Analysis Platform
• Ability Formula
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Ability Formula
The Save Ability Formula option from the Item Analysis red triangle menu saves the ability formula to a new column in the data table.This formula can be used to score additional subjects added to the data table or it can be copied to a new table to score a new set of subjects.
The function saved to the data table is called the
IRT Ability
function. The item parameter estimates are stored in a matrix in this function.
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Help created on 7/12/2018