PMID: 16526306Mar 11, 2006Paper

Comparison of two or more samples of quantitative data

Acta Medica Croatica : C̆asopis Hravatske Akademije Medicinskih Znanosti
Davor Ivanković, Mirjana Kujundzić Tiljak

Abstract

In the study of the difference between the two or more data groups, first a scientific hypothesis is to be presented involving guessing, questing, and hypothesizing that motivate research. Statistical hypothesis is drawn from the scientific hypothesis, namely, the hypothesis of the researcher (which, as a rule, is affirmative). The mode of statistical hypothesis is presented so as to be valued by statistical and analytical procedures. Testing of the hypothesis is a statistical procedure that can determine whether and how reliably the available data support the given hypothesis. Testing of hypotheses, namely, testing of the significance is basically the procedure of the quantification of impressions regarding the specific hypothesis. The sequence of actions in the testing of the hypothesis: stating a null and an alternative hypothesis; the choice of the significance level (alpha); collection of relevant data based on the adequate sample of subjects; evaluation of the value of results of the statistical test specific for the null hypothesis (Ho); comparison of results of the statistical test with the values from the known value distribution specific for the given test; interpretation of the statistical test results in the probabi...Continue Reading

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