The Polls 2011 – A Cusum Perspective

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Source: http://cdn.yougov.com/cumulus_uploads/document/t4qucitg9d/YG-Archives-Pol-Trackers-VotingTrends-231211.pdf As part of a review of the voting intention data from You Gov for 2011, I created a CUSUM chart. What is a CUSUM chart? CUSUM stands for Cumulative Sum. The horizontal axis line at zero is the … Continue reading