1. Arash Yazdani 2. Introduction: item or a combination A test may consist of a single of items. Regardless of the number of items in a test, every single item should…
Slide 1Measurement Concepts Operational Definition: is the definition of a variable in terms of the actual procedures used by the researcher to measure and/or manipulate…
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Slide 1Assessing the Assessment Reliability. Am I measuring something? Validity. Am I measuring what I think I am measuring? Test-retest Interobserver agreement Parallel…
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Slide 1 Review of Basics Slide 2 REVIEW OF BASICS PART I Measurement Descriptive Statistics Frequency Distributions Slide 3 MEASUREMENT CONCEPTS Measured vs. True Scores…
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Measurement Concepts Operational Definition: is the definition of a variable in terms of the actual procedures used by the researcher to measure and/or manipulate it. Similar…
Reliability Chapter 3 Every observed score is a combination of true score and error Obs. = T + E Reliability = Classical Test Theory Systematic versus unsystematic error…