(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.
Blue Eyes on Kittens. Most adult cats do not have blue eyes, although some do. Nevertheless, cat owners may notice that kittens' eyes are blue at first. Many kittens have blue eyes (although not all kittens do) during the process of eye opening that lasts the first two to three weeks of life. The eyes of a kitten, as they continue to develop, do not inherently have the color pigmentation necessary for her true eye color when she is young.