A measurement of the circumference of a disk has an uncertainty of 1.5 mm. How many measurements must be made so that the diameter can be estimated with an uncertainty of only 0.5 mm?
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Week 4: Bivariate Data 27 September 2016 Basic Statistics for Research Professor HK Dong Wendy Liu Bivariate/multivariate data – observations on two or more variables Marginal totals – total frequency of any row or column of a data table, given in the right-hand margin or bottom margin Simpson’s paradox – reversal of conclusions from a data table after combining several data tables together due to appearance of unreported variables Experimentation Random assignment – subjects placed randomly into control/experimental groups Placebo effect – subject’s expectations of a treatment to work cause positive results, even though the treatment itself has no therapeutic value o Placebo – treatment that has no physiological effect; usually a sugar pill,
Textbook: Statistics for Engineers and Scientists
Author: William Navidi
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