So they incorporate powerful data correlation and visualization methods that assist in this process.

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Additionally, after a detailed statistical analysis and recommen dation by Management Research Group, the Journal made a slight change to its corporate-score calculation to compensate for the discrepancy although the correlation between the two methods was very high.

WSJ: EMBA Rankings 2010, Wall Street Journal Methodology

As it continued to refine its methods, Twitter found that it had an increasingly strong correlation with Gallup polling data.

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