Science, Tech, Math › Math Z-Score Formula Print Math Statistics Formulas Statistics Tutorials Probability & Games Descriptive Statistics Inferential Statistics Applications Of Statistics Math Tutorials Geometry Arithmetic Pre Algebra & Algebra Exponential Decay Worksheets By Grade Resources By Courtney Taylor Courtney Taylor Professor of Mathematics Ph.D., Mathematics, Purdue University M.S., Mathematics, Purdue University B.A., Mathematics, Physics, and Chemistry, Anderson University Courtney K. Taylor, Ph.D., is a professor of mathematics at Anderson University and the author of "An Introduction to Abstract Algebra." Learn about our Editorial Process Updated on January 06, 2020 To convert any bell curve into a standard bell curve, we use the above formula. Let x be any number on our bell curve with mean, denoted by mu, and standard deviation denoted by sigma. The formula produces a z-score on the standard bell curve. Cite this Article Format mla apa chicago Your Citation Taylor, Courtney. "Z-Score Formula." ThoughtCo, Aug. 26, 2020, thoughtco.com/z-score-formula-3126281. Taylor, Courtney. (2020, August 26). Z-Score Formula. Retrieved from https://www.thoughtco.com/z-score-formula-3126281 Taylor, Courtney. "Z-Score Formula." ThoughtCo. https://www.thoughtco.com/z-score-formula-3126281 (accessed April 19, 2024). copy citation