(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.
âThe Squinting Catâ. Cats donât have as many eye problems as dogs do, but when an eye disease occurs in a cat, it is usually chronic and sometimes is a lifetime problem for the cat. Conjunctivitis is inflammation of the pink membrane part of the eye, which lines the white part (sclera) and the inner eyelid.The Squinting Catâ. Cats donât have as many eye problems as dogs do, but when an eye disease occurs in a cat, it is usually chronic and sometimes is a lifetime problem for the cat. Conjunctivitis is inflammation of the pink membrane part of the eye, which lines the white part (sclera) and the inner eyelid.