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CI 152 Assess 9&10

Standardized Tests & Testing Bias

A test which is administered according to the same rules each time: standardized test
A standardized test has scores which are... tabulated the same way each time
Standardized tests yield scores that are usually reported as "standard scores", such as... z scores, T scores, Normal Curve Equivalent (NCE) scores, Stanines
Standard scores have equal... intervals between scores
These standard scores have a mean of zero and a standard deviation of 1.0 z scores
These standard scores have a mean = 50 and a standard deviation of 10 T scores
These standard scores have a mean = 50 and a standard deviation of 21.06 Normal Curve Equivalent (NCE) scores
Rather than discrete points, Stanines are interval scores. Each interval is... 1/2 standard deviation
Allows meaningful comparisons of scores from dissimilar geog. areas, everyone expected to have taken test under similar circumstances common administration, tabulation, and reporting
What does common administration, tabulation, and reporting allow for? easy interpretation of the standard scores
When there are systematic differences in scoring for reasons unrelated to learners' grasp of the construct measured there exists: testing bias
Consistent differences between group A and Group B... do not necessarily constitute bias (they might occur for a variety of reasons)
Testing bias: differences must be shown not to reflect... actual differences in learners' knowledge
Created by: Neukay