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The Coefficient of Determination: Understanding r2 and R2.
Peer reviewed Peer reviewed
Barrett, Gloria B. – Mathematics Teacher, 2000
Describes how to teach the coefficient of determination and correlation coefficient. Includes a worksheet for correlation and regression activities. (KHR)
Descriptors: Correlation, Graphing Calculators, Mathematics Activities, Mathematics Instruction
Investigating Distributions of Sample Means on the Graphing Calculator.
Peer reviewed Peer reviewed
Barrett, Gloria B. – Mathematics Teacher, 1999
Uses the random-number generator and list features on the TI-83 graphing calculator to generate lists of sample means to help illustrate the concepts discussed in introductory statistics courses. (ASK)
Descriptors: Graphing Calculators, Mathematics Activities, Mathematics Instruction, Secondary Education