Slide 2 Designs and Reliability Assessing Student Learning
Section 4.2 Slide 3 Designs and Reliability DecisionTest Absolute
Relative Norm Referenced Criterion Referenced Slide 4 Designs and
Reliability Design Reliability as Multiple Administration
Consistency Reliability as Internal Consistency Common Design and
Reliability Calculations for Norm-Referenced Tests ( Relative
Decisions) Alternate forms Test-retest Raw coefficient alpha Name
Reliability Calculations Component Relationships Testing Occasions
Total scores Item to total scores OneTwo Identical mean observed
scores; measuring the same construct; etc. X X XX X X Correlation
of total scores Cronbach alpha Slide 5 Designs and Reliability TEST
BTEST A A C B TEST B $ % @ =?=? Slide 6 Designs and Reliability
TEST B A C B TEST A A C B = 12 A B C X X TEST B A B C X X X TEST
Slide 7 Designs and Reliability Slide 8 Data from only one
administration of the test Reliability is calculated on item level
responses in association with total scores Operate with raw scores
Slide 9 Cronbach Designs and Reliability
http://www.ssicentral.com/irt/student.html Slide 10 Whats next?
