PSYC 3020 Study Guide - Total Correlation, Grater, Takers
Document Summary
Week 10 tests and measures chapter 12. Conducting the pilot test: pilot test: a scientific investigation of a new test"s reliability and validity for its specific purpose, setting up, conducting, conducting quantitative analysis. Quantitative item analysis: statistical analysis of the responses that test takers gave to indv test questions. Item difficulty: item difficulty: the % of the test takers who answer a question correctly. Item-total correlations: correlation between scores on a single item and overall test scores. Interitem correlations: interitem correlation matrix: a matrix that displays the correlation of each item with every other item, phi coefficient: a statistic that describes the relationship between two dichotomous variables. Item-criterion correlations: relationship between performance on the item and performance on a criterion measure. High correlations good item: empirically based test: decision to place an indv in a category is based solely on the quantitative relationship between the predictor and the criterion.
