In conjunction with effective numeric tests, the model discusses the optimum size of the system components' dimensions at two area sizes of the substrate plate of heat exchanger.
Patient characteristics were evaluated by using unpaired Student t tests for numeric variables and χ2 tests for categoric variables.
"Numeric simulation" section test the theoretical conclusion by numeric simulation methods.
Given the limited number of patients, we used nonparametric tests: the Wilcoxon test (numeric variables) and the χ2 test (categorical variables) for one-way analysis of variance.
A Mann–Whitney U test (numeric variables) or chi-squared analysis was performed in order to assess whether there were differences in characteristics and outcome if surgery was performed on the dominant side versus the nondominant side.
For the sons of greenhouse workers, differences in characteristics of parents and birth information between the group of cryptorchid and noncryptorchid boys and between the group of boys whose mothers were occupationally exposed to pesticides and unexposed were tested by Mann–Whitney U-test (continuous data) or Fisher's exact test (numeric data).
Student's T-test (parametric numeric data), Mann-Whitney U-test (nonparametric numeric data) or Chi-square test (categorical data).
Demographic variables in both study populations were summarized and compared using the Student's t-test for numeric variables and chi-square tests for categorical variables.
Univariate descriptive statistic comparisons, using unpaired t-tests for numeric data (confirming with Wilcoxon rank-sum test, if non-normality was suspected) or chi-square tests (or Fisher's exact test, for small numbers) for categorical data.
In the book she excoriates the privatization movement she once championed, decrying charter schools, vouchers, "Race to the Top" testing, numeric accountability, and the rest.
