Method: Nonlinear Regression

Methods: Nonlinear Regression, Transformation, Regression,
Topics: Biology,
Datafile Name: Medflies

By using Mediterranean fruit flies, Gompertz's 1825 theory that mortality rates increase at an exponential rate as age increases is examined. (i.e. as an organism gets older, its chance of dying per unit of time increases exponentially.) 1,203,646 fruit flies comprised the population for this...

Methods: Outlier, Regression, Residuals, Transformation, Nonlinear Regression, Dummy Variable,
Topics: Health, Medical, Social Science,
Datafile Name: Smoking and Cancer

Nevada and the District of Columbia are outliers in the distribution of cigarette consumption (sale) per capita by states in 1960. How the most extreme observa- tion, Nevada, should be handled in the regressions of various cancer death rates on cigarette consumption, however, varies. In addition,...

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