Laughing Gas (novel) Laughing Gas (novel) Laughing Gas is a comic novel by P. G. Wodehouse, first published in the United Kingdom on 25 September 1936 by Herbert Jenkins, London, and in the United States on 19 November 1936 by Doubleday, Doran, New York. Written in first person narrative, the story is set in Hollywood in the early 1930s (the Depression is mentioned twice) and is, compared to, say, Budd Schulberg's "What Makes Sammy Run?" (1941), a light-hearted and exclusively humorous look at the film industry and in particular at child stars. Both Schulberg and Wodehouse describe the methods of all those would-be
Algebraic formula for the variance Algebraic formula for the variance In probability theory and statistics, there are several algebraic formulae for the variance available for deriving the variance of a random variable. The usefulness of these depends on what is already known about the random variable; for example a random variable may be defined in terms of its probability density function or by construction from other random variables. The context here is that of deriving algebraic expressions for the theoretical variance of a random variable, in contrast to questions of estimating the variance of a population from sample data for which there are special considerations