Measures of central tendency. Very easy to forget the difference between the mean, the median and the mode. Mean: the average value. Median: the middle value of a list in ranked order. Mode: The most frequent value.
Finding out that someone loves the same bookS as you? Hello, instant new best friend! Love LibraryThing and GoodReads online but it sure seems like people who share my reading tastes are everywhere in the world. except my neighborhood!