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Summary
DescriptionOpinion polling in Tamil Nadu assembly election 2011.png
English: Using Excel, created a bar graph illustrating the differences in margin of victory (in seats) between opinion polling and final results. The formula used to make the calculation is (AIADMK seats won from opinion polling - DMK seats won from opinion polling) - (203-31). Green represents the polling made the correct prediction (AIADMK+ victory or lead), while Red represents the polling made the wrong prediction (DMK+ victory or lead). In cases where a range was given by the polling agency, the upper and lower limit of the range were averaged.
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