ERIC Number: EJ771160
Record Type: Journal
Publication Date: 2007-Jun
Reference Count: 2
Evaluation of Mean and Variance Integrals without Integration
Joarder, A. H.; Omar, M. H.
International Journal of Mathematical Education in Science and Technology, v38 n4 p538-543 Jun 2007
The mean and variance of some continuous distributions, in particular the exponentially decreasing probability distribution and the normal distribution, are considered. Since they involve integration by parts, many students do not feel comfortable. In this note, a technique is demonstrated for deriving mean and variance through differential calculus. The general nature of the technique has potential for wider applications.
Descriptors: Probability, Calculus, Mathematics Instruction, Mathematical Formulas, Equations (Mathematics), Statistics, Problem Solving, Statistical Distributions
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Authoring Institution: N/A