this measures if two groups are statistically different
case study: built-in Brown Corpus
RQ: is there any significant differences in adjectives (tagged as JJ, JJT, JJR etc) in Learned (academic) and Fiction sections/types
Query: _JJ*
attribute: type, choose fiction and learned
Click 'Run statistical test'
Results: Significant difference found, but effect size is small (see report)
Correlation
Clustering
Correspondence
Authorship