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50 Years of ERIC
50 Years of ERIC
The Education Resources Information Center (ERIC) is celebrating its 50th Birthday! First opened on May 15th, 1964 ERIC continues the long tradition of ongoing innovation and enhancement.

Learn more about the history of ERIC here. PDF icon

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Eisenhauer, Joseph G. – Teaching Statistics: An International Journal for Teachers, 2011
This note shows how some density functions for continuous probability distributions can be constructed in a transparent manner to help students appreciate their development.
Descriptors: Geometric Concepts, Probability, Statistical Distributions, Mathematical Concepts
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Eisenhauer, Joseph G. – Teaching Statistics: An International Journal for Teachers, 2009
Very little explanatory power is required in order for regressions to exhibit statistical significance. This article discusses some of the causes and implications. (Contains 2 tables.)
Descriptors: Statistical Significance, Educational Research, Sample Size, Probability
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Eisenhauer, Joseph G. – Teaching Statistics: An International Journal for Teachers, 2008
This article reviews several attempts to define degrees of freedom, and offers some simple explanations of how they are derived and why they are used in various contexts.
Descriptors: Mathematics Instruction, Statistics, Mathematical Concepts, Definitions