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Exploratory Data Analysis: Understanding Shape and Outliers

Learn about exploratory data analysis, including identifying outliers and understanding dataset shapes through summaries and comparisons. Explore box plots and the 5-number summary method for effective data exploration.

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Exploratory Data Analysis: Understanding Shape and Outliers

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  1. Statistics 300:Introduction to Probability and Statistics Section 3-4

  2. Exploratory DataAnalysis • First stage in analysis • Summaries that help us see • Outliers • Shape • Comparisons

  3. Exploratory DataAnalysis • Outliers • Observations that are not consistent with the rest of the data • Many ways to identify outliers • Some used in exploratory steps

  4. Exploratory DataAnalysis • Shape • Box (and whisker) Plots • Simple distribution pictures • Often used for initial steps to explore data sets

  5. Exploratory DataAnalysis • Box Plot • 5 number summary • Min • P25 (Q1) • P50 (Median or Q2) • P75 (Q3) • Max

  6. Exploratory DataAnalysis • Box Plot • Graph of the 5 number summary

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