ELIABILITY: Reli qualification is one of the qualities of a try or any(prenominal) other measurement instruments. Test reli susceptibility means ability of the judge to produce consistent results when applied more than erstwhile to a group of students under comparable situations such as corresponding age, level of education, cultural back ground and economic status (Rossi,P.H et al 2004). To understand whether the test is reliable or not, interpretation is done under guided reliableness coefficiencies (see pageboy 5) which argon obtained from the application of formulae such Spearman post order of magnitude and Spearman chocolate-brown call (Thorndike,R.M et al 1991). WAYS OF DETERMINING RELIABILITY running take RELIABILITY According to Popham, W.J.(1995), test reliability can be obstinate by:- Test- retest method. This method involves administering a test double to the akin group of students at ii different points in time. The results obtaine d be correlated by using Spearman out-and-out(a) Order and Spearman brownness Prophecy formulae (used in this question). Independent judges method. In this method, devil t from each oneers independently mark the test scripts and score it without showing each other until the task is finished. consequently the scores from the two teachers ar correlated using Spearman Rank Order and Spearman Brown Prophecy formulae. Equivalent forms method.
The teacher constructs two tests on the uniform fill area, testing the same skill, with the same number of items and the tests are administered to the same group of students on the same day and the scores obtained are correlated to find the coefficient of reliability by using S! pearman Rank Order and Spearman Brown Prophecy. other(a) formulae or methods that can be used to calculate the test reliability from which the interpretation on whether the test was reliable or not are Kuder Richardsons 20 and 21 (K R20 and K R21) (TIE 2007). calculating RELIABILITY OF THE TEST AS PER data AND FORMULAE GIVEN A sample of eight (8) students was tested and re- tested in...If you wish to subscribe to a full essay, order it on our website: OrderEssay.net
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