What is the symbol used in Levene's test for assessing variance equality?

In Levene's test, the symbol used to assess variance equality is indeed C, which corresponds to the F statistic. This test is specifically designed to evaluate whether the variances of different groups are equal, an important assumption in many statistical analyses including ANOVA.

Levene's test operates by examining the means or medians of the absolute deviations of the data points from their group means or medians. The calculated F statistic indicates whether the group variances are significantly different. If the test yields a significant result, it suggests that at least one group has a variance that is different from the others.

Other statistical symbols represented in the options serve different purposes in statistics. For example, the symbol t is primarily associated with t-tests, r represents the correlation coefficient, and p indicates the p-value which reflects the significance level of a statistical result. In the context of Levene's test and assessing variance equality, the F statistic is critical as it directly relates to the test's assessment of homogeneity of variances.