# chi-square test

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## chi-square test

n.
A test that uses the chi-square statistic to test the fit between a theoretical frequency distribution and a frequency distribution of observed data for which each observation may fall into one of several classes.

## chi-square test

n
(Statistics) statistics a test derived from the chi-square distribution to compare the goodness of fit of theoretical and observed frequency distributions or to compare nominal data derived from unmatched groups of subjects

## (or chi′-squared`) test`,

n.
a test that uses the quantity chi-square for testing the mathematical fit of a frequency curve to an observed frequency distribution.
[1935–40]
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References in periodicals archive ?
From the results of Pearson Chi-squared test, it can be interpreted that the factors significantly affecting the occurrence of surgical site infections are alkaline phosphate levels above 150 IU/L, body mass index less than 17.
The table above shows the results related to chi-squared test that determines existence of relationship or lack of relationship between the two variables of having or not having internet and type of political culture.
The chi-squared test for trend revealed a highly significant increase in ceftriaxone resistance in KP between 2005 and 2010 (16-62%, p<0.
A chi-squared test is used to compare the predicted numbers with the actual numbers and this test suggests the model is not reliable.
Chi-squared test: now the software indicates whether the scorecard variable has passed the chi-squared test or not
Subsequent tests for PPP, however, strongly reject the hypothesis with a chi-squared test statistic of 55.
Consultant Stewart makes sure those with limited exposure to statistics get a lot of practice here and includes answers to his exercises as he covers population and samples, random sampling, presenting data, frequencies, percentages, proportions, rates, types of data, mean, median, mode, centiles, standard deviation, standard error, normal distribution, confidence intervals, probability, hypothesis tests and P-values, the t-test, parametric and non-parametric tests, correlation and regression, the chi-squared test and topics related directly to epidemiology such as measuring association, measuring disease frequency, using case-control and cohort studies and performing randomized controlled trials.
Pearson was pre-occupied with between-group speciation and thus his statistical methods, such as the Chi-squared test, are categorical in nature.
A chi-squared test for independence found a significant difference between responses to three survey questions asked after each of the three treatments at the 95% confidence level.
The chi-squared test shows that this degree of variation is probably not the result of chance variations, and we should indeed conclude that Chronicles is significantly sparser in verbs than Kings or Samuel.

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