The O. sativa distribution was also even for U{1 0} and U{1 m}, chi-square of 23.63 and 25.64 respectively, but unequal (Chi-square of 65.10) on U{1 1} genes.
The odds for positive samples varied significantly between age groups (chi-square unequal odds = 189, p<0.001).
Pooled t-test; t-test for unequal variances; Chi-square test Missing data were found only in the ventilator setting recordings.
Significance of difference between boys and girls by based on independent samples t-tests (for assumed equal and when applicable unequal variances) or Chi-square: *p < 0.05; **p < 0.01; ***p < 0.001.
In presence of unequal variances, the ordinary least squares parameter estimates are still asymptotically normal, while the covariance estimation obtained by the ordinary least squares estimation technique is inconsistent.
Generally speaking, chemical processes in nature are non-square systems with unequal numbers of inputs and outputs.
Other statistical tests used were the t test for unequal variances and the chi-square test.
Associations between numbers of positive samples and age group, sex, and ring-road were examined by the chi-square test for unequal odds and linear trend across groups (Epi-Info 6.04, Centers for Disease Control and Prevention, Atlanta, GA).
*significant at p < 0.05. 1 t test for two independent samples (pooled variance as no indication from folded F of unequal variances), χ2 from chi-square test for contingency tables, Wald χ2 from ordinal logistic regression for which the proportional odds assumption was not violated.
