STAT 3025Q Lecture Notes - Lecture 1: Histogram
18 Dec 2017
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Population - a collection of objects of interest. Cars of the same type assembled in a specified plant, or production line, or during a specified period. Patients with a specified disease living in a specified country. If desired information is available for all objects in the population, it is called a census. Sample - a subset of the population selected in a prescribed manner. In a study, only certain characteristics of the objects in a population are of interest. Ordinal (opinion to a product (like very much, somewhat like, neutral, somewhat so not like, dislike) Numerical (number of flaws on the surface of each casting (discrete), thickness of each capsule wall *continuous) Variable - any characteristic whose value may change from one object to another. A univariate data set consists of observations on a single variable. The types of transmission (automatic or manual) or 5 cars: a, m, m, a, a.
