منابع مشابه
The Chi-square test of independence
The Chi-square statistic is a non-parametric (distribution free) tool designed to analyze group differences when the dependent variable is measured at a nominal level. Like all non-parametric statistics, the Chi-square is robust with respect to the distribution of the data. Specifically, it does not require equality of variances among the study groups or homoscedasticity in the data. It permits...
متن کاملThe Chi Square Test
The Chi square test is a statistical test which measures the association between two categorical variables. A working knowledge of tests of this nature are important for the chiropractor and osteopath in order to be able to critically appraise the literature.
متن کاملCHI-Squared Test of Independence
Chi-square (X) test is a nonparametric statistical analyzing method often used in experimental work where the data consist in frequencies or ‘counts’ – for example the number of boys and girls in a class having their tonsils out – as distinct from quantitative data obtained from measurement of continuous variables such as temperature, height, and so on. The most common use of the test is to ass...
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The introductory part of this paper concerns a marketing survey of the utilization of postal and telecommunication services in a regional entrepreneurial environment. The methodology of the chi-square test of independence between two qualitative statistic figure values is detailed in the next part of the paper. This methodology is applied to the results of the marketing survey in three groups; ...
متن کاملChi-Square Test for Goodness of Fit
Scientists often use the Chi-square (χ) test to determine the “goodness of fit” between theoretical and experimental data. In this test, we compare observed values with theoretical or expected values. Observed values are those that the researcher obtains empirically through direct observation. The theoretical or expected values are developed on the basis of an established theory or a working hy...
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ژورنال
عنوان ژورنال: Biochemia Medica
سال: 2013
ISSN: 1846-7482
DOI: 10.11613/bm.2013.018