Types of test reliability
Validity and Reliability of the Research Instrument; How ...
validity, must always be pursued – not only to support test interpretation but also to justify test use”. There are two types of criterion validity namely; concurrent validity, predictive and postdictive validity. A. Predictive Validity The survey is predictively valid if the test accurately predicts what it is supposed to predict. It
[PDF File]Reliability and Validity - University of Wisconsin–Madison
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programs) to 40 (watch all types of TV news program all the time). Now, based on the empirical data, we can assess the reliability and validity of our scale. DETERMINING RELIABILITY 1. Stability (Test-Retest Correlation) Synonyms for reliability include: dependability, stability, consistency (Kerlinger, 1986).
[PDF File]Validity and reliability in quantitative studies
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item-to-total correlation, split-half reliability, Kuder-Richardson coefficient and Cronbach’s α. In split-half reliability, the results of a test, or instrument, are Table 1 Types of validity Type of validity Description Content validity The extent to which a research instrument accurately measures all aspects of a construct Construct validity
[PDF File]Basics of Classical Test Theory
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Types of Reliability Example Classical Test Theory Classical Test Theory (CTT) – often called the “true score model” Called classic relative to Item Response Theory (IRT) which is a more modern approach CTT describes a set of psychometric procedures used to test items and scales reliability, difficulty, discrimination, etc.
[PDF File]UG116 (v10.14) April 23, 2021 Device Reliability Report
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footnote to Table: THB Test Results for Si Gate CMOS Device Type UltraScale FPGAs. Added Table: High-Temperature Storage Life Test Results for Si Gate CMOS Device Type UltraScale FPGAs. Chapter 4: Board-Level Reliability Tests Updated Table 111: Summary of Test Results. Added FBVA900, FFVB2104, and FLVA1924 package types to Pb-Free BGA, Table 112.
[PDF File]Validity and Reliability in Social Science Research
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in reliability testing: equivalence, stability over time, and internal consistency. These concerns and approaches to reliability testing are depicted in Figure 1. Each will be discussed next. Test-retest reliability. Test-retest reliability refers to the temporal stability of a test from one measurement session to another. The
[PDF File]Calculating Reliability of Quantitative Measures
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3 Split-Half Reliability KR-20 • NOTE: Only use the KR-20 if each item has a right answer. Do NOT use with a Likert scale. • Formula: – rKR20 is the Kuder-Richardson formula 20 – k is the total number of test items
[PDF File]An Instructor’s Guide to Understanding Test Reliability ...
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reliability estimate of the current test; and m equals the new test length divided by the old test length. For example, if the test is increased from 5 to 10 items, m is 10 / 5 = 2. Consider the reliability estimate for the five-item test used previously (α=ˆ .54). If the test is doubled to include 10 items, the new reliability estimate would be
Understanding Reliability and Validity in Qualitative Research
devising a test (Crocker & Algina, 1986) or the validity of an instrument is on focus. The significance of this test is to ensure replicability or repeatability of the result. Reliability and Validity in Quantitative Research “Reliability and validity are tools of an essentially positivist epistemology.” (Watling, as cited in Winter, 200, p. 7)
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Reliability is about making sure that different test forms in a single administration are equivalent; that retests of a given test are equivalent to the original test, and that test difficulty remains constant year to year. When a student must take a make-up test, for example, the test should be approximately as difficult as the original test.
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