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.
knowledge. But, unfortunately, some graphs deceive or mislead. This may happen because the designer chooses to give readers the impression of better performance or results than is actually the situation. In other cases, the per-son who prepares the graph may want to be accurate and honest, but may
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