Transcription of Chapter 2 Graphical methods for presenting data
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Chapter 2 Graphical methods for presenting data
Chapter 2 Graphical methods for presenting IntroductionWe have looked at ways of collecting data and then collating them into tables. Frequency tablesare useful methods of presenting data ; they do, however, have their limitations. With largeamounts of data Graphical presentation methods are often clearer to understand. Here, we lookat methods for producing Graphical representations of dataof the types we have seen Stem and Leaf plotsStem and leaf plotsare a quick and easy way of representing data graphically. They can beused with both discrete and continuous data . The method for creating a stem and leaf plot issimilar to that for creating a grouped frequency table.
CHAPTER 2. GRAPHICAL METHODS FOR PRESENTING DATA 13 a stem unit of one 10 and a leaf unit one 1. It is important to give an equal amount of space to
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