STAT 200 Lecture Notes - Lecture 1: Old Age, Minitab, Dependent And Independent Variables
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Instructor: jennifer shook, 814-865-6164 (immediate responses, office hours: wed 2-4 pm 416 thomas. Chapter 2: an, what is an outlier? observations. Population vs sample outlier is an observation point that is distant from other: we generally want to describe a population using stats. But it is unrealistic to measure variables on every observational unit in the population. a subset of the pop from which we can gather information is called a sample. Parameter vs statistic: values from the entire population are called statistics. the sample. Type of variables are called parameters. values from: categorical: Possible roles played by variables: response variables: the variables of which we want to determine the outcome. Sex and gpa: explanatory: sex ; response: gpa. Is there a difference in the average weight of males and females: variable of primary interest= weight ( response, variable that helps explain any differences we see in the response variable = sex ( explanatory << will always be explanatory)
