The Chi-Square Test is used to analyze the frequency table (i.e., contingency table), which is formed by two categorical variables. The chi-square test evaluates whether there is a significant relationship between the categories of the two variables.
Well done interactive website from The Chronicle allowing comparison of different institutions on cost (net price), graduation rate, and student debt variables. Also provides details for each individual school selected for comparison. Easy navigation.
The python sys module provides functions and variables which are used to manipulate different parts of the Python Runtime Environment. It lets us access system-specific parameters and functions.