Some articles on category, category groups:
... The processes can be divided into between category and within category groups of comparison ... Between category groups are those that compare between two separate sets of objects ... Within category groups are those that compare within one set of objects ...
Famous quotes containing the words groups and/or category:
“Trees appeared in groups and singly, revolving coolly and blandly, displaying the latest fashions. The blue dampness of a ravine. A memory of love, disguised as a meadow. Wispy cloudsthe greyhounds of heaven.”
—Vladimir Nabokov (18991977)
“The truth is, no matter how trying they become, babies two and under dont have the ability to make moral choices, so they cant be bad. That category only exists in the adult mind.”
—Anne Cassidy (20th century)