In the Definitional Formula $x^{2}=\sum_{i=1}^{k} \frac{\left(f_{0}-f_{e}\right)^{2}}{f_{e}}$ , and the Computational Formula $x^{2}=\sum_{i=1}^{k} \frac{\left(f_{o}^{2}\right)}{f_{e}}-n$

Multiple Choice

In the definitional formula, $x^{2}=\sum_{i=1}^{k} \frac{\left(f_{0}-f_{e}\right) ^{2}}{f_{e}}$ , and the computational formula, $x^{2}=\sum_{i=1}^{k} \frac{\left(f_{o}^{2}\right) }{f_{e}}-n$ , squaring the numerator ensures that ______.

A) a Chi-square statistic is never zero
B) a Chi-square statistic is never less than zero
C) only severely variables that are dependent on each other will be negative
D) it is easier to reject the null hypothesis because exponentiating a value increases its size