chi square


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chi square (χ)2

[kī]
(in statistics) a statistic test for an association between observed data and expected data represented by frequencies. The test yields a statement of the probability of the obtained distribution having occurred by chance alone.

chi square (kī),

n a nonparametric statistic used with discrete data in the form of frequency count (nominal data) or percentages or proportions that can be reduced to frequencies. Used to determine differences between categories (e.g., yes-no; visits dental office every 6 months, 1 year, 2 years, 5 years); compares the observed results with the expected results to determine significant differences. May be used with many categories of response.
References in periodicals archive ?
As the Chi Square value was found greater than the table value at 0.
577 done Table 12: Factors Affecting Surgical Site Infection, Results of Chi- squared test Risk Pearson Df P Significance Factors Chi Square Value 1 Haematocrit 1.
Table 3 presents a summary of the forms included in these two classes, that is, their 35 most representative forms, showing the frequency of each form in the class, its total frequency in the analyzed segments, the percentage of the form in the class, and the value of its chi square of association, calculated from a table such as Table 1 (for each value, df= 1;N= 622, p < .
The table shows that the chi square value X2 pless than 0.
Chi Square [chi square]: 2,957 Table 5: Corelation Between The Students' Gender And The Level Of Noticing Food Quality Certificates.
Based on the Chi square analysis, it can be seen that the first application Software is the only one that results in the Null Hypothesis not being rejected.
Again, this Chi Square finding is based exclusively on a comparison of Haitian and Hispanic responses, but ANOVA results which include African American responses also revealed significant variations by ethnicity (F = 4.
There were no statistically significant differences in perception of viability by age Chi square (1, N = 35) = 15.
Once again, a Chi Square analysis was not possible due to cell size restrictions.
Statistically significant chi square (or difference of chi square) statistics occur because of the large sample sizes.
Barnett suggests using a chi square test to make this process more objective.
chi square and binomial tests enabled a determination of the statistical significance of the outcomes (even though the population of World Series games, rather than a sample was used, there is precedence for using inductive statistics under these conditions [1].