Biology 2244A/B Lecture Notes - Box Plot, Upper Class, Cumulative Frequency Analysis
17 Apr 2013
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Document Summary
Shape overall pattern (distribution) of observations. Centre typical value of variable (where the middle of the data set is located) Variation: measure of the amount that the data values vary among themselves. Outliers: sample values that lie very far away from the vast majority of the other sample values. Time: changing characteristics of the data over time. Density histograms and density curves should be similar. Lists data values (individually or by groups of intervals) along with their corresponding frequencies (or counts) Frequency the number of original values that fall into a particular class. Lower class limits smallest numbers that can belong to the different classes. Upper class limits largest numbers that can belong to the different classes. Class boundaries the numbers used to separate classes, but without the gaps created by class limits. Class midpoints midpoints of the classes (add lcl to ucl and divide by 2)
