2 Graphics - Sir Francis Galton The history of statistics...

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The history of statistics has its roots in biology Sir Francis Galton Inventor of fingerprints, study of heredity of quantitative traits Regression & correlation Karl Pearson Polymath- Studied genetics Correlation coefficient ! 2 test Standard deviation Sir Ronald Fisher The Genetical Theory of Natural Selection Founder of population genetics Analysis of variance likelihood P -value randomized experiments multiple regression etc., etc., etc.
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Graphics Types of Data ! ! Categorical Variables (also known as Class variables, or Nominal variables) " ! Numerical Variables (or Quantitative Variables) " ! Numerical variables are either continuous or discrete . Categorical variables ! Sex ! Genotype ! Drug treatment (e.g. aspirin vs. ibuprofen) ! Province ! Survival (i.e., live or die) Numerical variables ! Height ! Weight ! Tail length ! Dose (e.g., in micrograms/gram) ! Longevity (i.e., number of years)
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Discrete vs. Continuous Can be counted
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2 Graphics - Sir Francis Galton The history of statistics...

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