STAT 263 Chapter Notes - Chapter 2: Ogive, Upper Class, Old Faithful
25 Apr 2017
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Document Summary
In the last few decades there has been an increased need to process large amounts of data into a usable form. Listing data (a. k. a. organizing) is the first step to any kind of statistical analysis. Some of the ways we can list/order data to make it more readable: by listing in ascending or descending order, dot diagrams (and variations, bar charts (and variations: horizontal/vertical bar charts) Dot diagrams are impractical/ineffective when a data sets contain large amounts of various values and categories. Therefore, we can use a stem-and-leaf display to see a good overall picture of the data without loosing any information. We can form a stem-and-leaf display by referring to the first digit of each number as stem and the digit(s) following as being the leaf. Stem-and-leaf displays are a hybrid kind of arrangement, obtained partly through groupig and partly through listing data. A variation of this display is the double-stem display.
