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Star Library: What Makes the Standard Deviation Larger or Smaller?
The activity is designed to help students develop a better intuitive understanding of what is meant by variability in statistics. Emphasis is placed on the standard deviation as a measure of variability. As they learn...
Modeling the Reliability of Ball Bearings
The data, created by Chrys Caroni of the National Technical University of Athens, presented in this article refer to the reliability of ball bearings in manufacturing. The data was originally published by "Lieblein and...
A Simple Dataset for Demonstrating Common Distributions
This dataset, created by Peter K. Dunn of the University of Southern Queensland, contains the time of birth, sex, and birth weight for 44 babies born in one 24-hour period at a hospital in Brisbane, Australia. The data...
1993 New Car Data
This dataset, created by Robin H. Locke of St. Lawrence University, describes 93 new cars for the 1993 model year with 26 variables, including price, mpg ratings, and engine size. It also illustrates a broad range of...
Nonrandom Risk: The 1970 Draft Lottery
This article, created by Norton Starr of Amherst College, presents a dataset containing the 1970 draft lottery information, which illustrates a nonrandom procedure. Some of the key concepts covered included: Chi-square...
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