This video is a supplement for MATH 2193: Elementary Statistics at Tulsa Community College. Related material can be found in section 6.4 of Essentials of Statistics, 6th edition, by Triola.
In this video, we discuss the assumptions made when we use the formula for the standard deviation of the sample means given earlier in this lesson. Then we discuss how that formula ought to be modified when those assumptions do not hold.
Study guides for each unit, PowerPoint slides, and pdfs of the Triola Formulas and Tables and a Table of Binomial Probabilities can be found at [ Ссылка ].
