Transcription of 31 Misleading Graphs and Statistics
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31 Misleading Graphs and Statistics
31 Misleading Graphs and StatisticsIt is a well known fact that Statistics can be Misleading . They are often usedto prove a point, and can easily be twisted in favour of that point! The pur-pose of this section is to learn how to recognize common statisitcal deceptionso that to avoid being SamplingWhen you use a sample to represent a larger group , you must make sure thatthe people in the sample are fairly representative of the larger whether a mall is a good place to find a sample for a survey aboutthe amount of allowance received by people ages 10 to mall is probably not a representative place to find a fair sample of peo-ple in this age range. Taking a sample at the mall might not represent fairlythose people who receive a small allowance, or noneMisleading GraphsGood Graphs are extremely powerful tools for displaying large quantities ofcomplex data; they help turn the realms of information available today intoknowledge.
When you use a sample to represent a larger group, you must make sure that the people in the sample are fairly representative of the larger group. Example 31.1 Decide whether a mall is a good place to find a sample for a survey about the amount of allowance received by people ages 10 to 15. Solution.
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