1. Typing error 2. Logic, reasoning Logic of scientific work ... - medri
1. Typing error 2. Logic, reasoning Logic of scientific work ... - medri
1. Typing error 2. Logic, reasoning Logic of scientific work ... - medri
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2<strong>1.</strong> Null-hypothesisNull-hypothesisNo differenceNo difference ≈ Not guilty2<strong>2.</strong> Testing the hypothesisA. null-hypothesisB. statistical testC. level <strong>of</strong> significanceD. statistics calculationE. conclusionA. Hypothesis• null – H 0 – no difference• alternate – H 1 – difference exists• only one can be truthful• only one can be accepted, other will berejectedB. Choosing the test• measuring scales• sample• size• related on unrelated samples• data distribution• parametric• nonparametric• no. <strong>of</strong> variables• etc.23. Statistical testsScale One sample Two Three or morerelated unrelated related unrelatedNominal binomial McNemar Cohranchi-square Fisher chi-sqr.chi-square/Ordinal Kol.-Smirn. Wilcoxon FriedmanMWp/medianMosesKWInterval ...Ratio ...6
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