(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.
Tiger Eye (Cat's Eye, Falcon's Eye or Hawk's Eye) gemstone meaning. Tiger Eye lets you see everything. Use it for insight and you can be a very lucky person. When used in jewelry the tiger eye may bring good luck and protection from the evil eye to the wearer. It also known to bring clear thinking and insight.