(Redirected from Weighted mean) In colloquial language, an average is the sum of a list of numbers divided by the number of numbers in the list. In mathematics and statistics, this would be called the arithmetic mean. In statistics, mean, median, and mode are all known as measures of central tendency.
Definition of cat'sâeye for English Language Learners. : 1  a jewel that has a pale stripe running down its middle which makes it look like the eye of a cat. : 2  a marble with round circles that look like eyes.
For most Catâs Eye lovers, it is worn on a ring, a charm or as part of a bracelet. Many people like Catâs Eye because of its mystical qualities that are said to help the intellect, to foster wisdom and its connotation with a cat, meaning crafty or sly.