User blog comment:Xilinoc/Ch. 636 - Sensitive Monster/@comment-26812710-20150723153904/@comment-26812710-20150723160346

Analyze is preferred in American and Canadian English. Analyse is the preferred spelling outside North America. There are no other differences between analyze and analyse. The s/z distinction extends to the participles, analyse/analyze and analysing/analyzing, as well as to other derivatives such as analyser/analyzer and analysable/analyzable, but analysis is the corresponding noun in all varieties of English. (From grammarist.com)