Kr 20

20 kroner minnemynter 1 20 kr 1999 2 20 kr norges bank 200 år verdi 3 20 kroning verdi 4 The Kuder-Richardson Formula 20, often abbreviated KR, is used to measure the internal consistency reliability of a test in which each question only has two answers: right or wrong. The Kuder-Richardson Formula 20 is as follows: KR = (k / (k-1)) * (1 – Σp j q j / σ 2) where: k: Total number of questions. 5 Kuder–Richardson Formula 20 (KR) The name of this formula stems from the fact that is the twentieth formula discussed in Kuder and Richardson's seminal paper on test reliability. It is a special case of Cronbach's α, computed for dichotomous scores. 6 Essentially the KR is assessing how consistent the results from the test are, or how well the test is measuring what you want it to measure. KR scores range from (although it is possible to obtain a negative score); 0 indicates no reliability and 1 represents perfect test reliability. 7 In statistics, the Kuder-Richardson Formula 20 (KR) is a measure of internal consistency reliability for measures with dichotomous choices, first published in It is analogous to Cronbach's α, except Cronbach's α is used for non-dichotomous (continuous) measures. [1] A high KR coefficient (e.g., >) indicates a homogeneous test. 8 I psykometri er Kuder–Richardson-formlene, først publisert i , et mål på intern konsistenspålitelighet for mål med dikotome valg. 9 BRUKTE: CD fra kr Til salgs20 kr Drammen fra kr Pris avtales for områder utenfor Drammen by. 10 The Kudar-Richardson 20 (KR) formula generates a raw reliability coefficient for survey items that use these response sets. Kudar-Richardson 20 cannot be used for response sets that have three or more levels. Kudar-Richardson 20 is run the exact same way as Cronbach's alpha in SPSS and interpreted the same way as well. 11 This method is known as Kuder-Richardson 20 (KR20): (4) where ∑ pq is the summation for each item of the proportion of people who pass that item times the proportion of people who do not pass that item. As can be seen in formula (4), KR20 is the dichotomous equivalent to the coefficient alpha. View chapter Purchase book. 12