However, it can only be effective with large questionnaires in which all questions measure the same construct. The split-half method is a quick and easy way to establish reliability. 25) should either be removed or rewritten. For example, any items on separate halves of a test with a low correlation (e.g., r =. The reliability of a test could be improved by using this method.
If the two halves of the test provide similar results, this would suggest that the test has internal reliability.
A test can be split in half in several ways, e.g., the first half and the second half or by odd and even numbers. This is done by comparing the results of one half of a test with the results of the other half. There, it measures the extent to which all parts of the test contribute equally to what is being measured. Formulae are presented so that the researcher can calculate these estimators without the use of sophisticated statistical software.The split-half method assesses the internal consistency of a test, such as psychometric tests and questionnaires. Although some qualitative researchers disagree agree with such application, a link between the qualitative and quantitative fields is successfully established through data collection and coding procedures.ĭata Collection and Analysis: Narrative data were collected from a random sample of 528 undergraduate students and 28 professors.įindings: The calculation of the kappa statistic, weighted kappa statistic, ANOVA Binary Intraclass Correlation, and Kuder-Richardson 20 is illustrated through a fictitious example. Purpose: This paper presents quantitative methods for determining the reliability of conclusions from qualitative data sources. With respect to qualitative research, measurement typically occurs during the coding process. Background: Measurement is a indispensable aspect of conducting both quantitative and qualitative research and evaluation.
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