Split-half can be viewed as a one-test equivalent to alternateįorm and test-retest, which use two tests.But if your test is composed of essay-type questionsĪnd each question worths 10 points, then the scale is For example, if your test questions are multipleĬhoices or true/false, the responses must be binary in nature (either On the other hand, KR can be applied to dichotomously-scored data Cronbach Alpha can be used for both binary-type and wide-scaledĭata.You may compute Cronbach Coefficient Alpha, Kuder Richardson (KR) Formula, or split-half Reliability Coefficient to check for the internal consistency within a single test.Ĭronbach Alpha is recommended over the other two for the following reasons: Which reliability coefficients should I use? With only one test result, what should I do to evaluate the Write two tests or administer the same test in two different But due to lack of resources, I cannot afford to I heard about using alternate forms and test-retest toĮstimate reliability. Instrument is reliable in order to proceed with my data collection. I can't wait to graduate! I would like to find out whether my I am a graduate student who is conducting a research project for my
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