STAT 101 Lecture 1: STAT 101 5/8/17

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Stat 101 5/8/17 - lecture 1 - introduction and descriptive statistics. Data analysis - data can come to us in many forms. Diff summarizations appropriate for diff forms of data. Be able to distinguish b/w categorical data & qualitative data. Quantitative data sometimes grouped together in classes. Distinction b/w categorical & quantitative data may be unclear. Possible to group time variable into years. Years may be thought of as categorical. Also possible to think of years as quantitative. When data can be thought of as quantitative & categorical, typically methods for both data also appropriate. Understand type of data for which appropriate to construct. Be familiar w/ properties of w/ respect to histograms. Be able to calculate & interpret for quantitative data. Understand type of data for which appropriate to construct boxplot. Exact details regarding construction of boxplot not important. Mort important density curves in stats - correspond to normal distributions. Particular normal distribution characterized by 2 quantities.

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