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Comparing current PE to mean PE can allow you to see if Charter Communications Inc may be undervalued based on PE ratio.

* Total of 754 data points since 01/10/2010.

** From 01/10/2010 we changed 133 data points that were under -50 PE to -50 and 24 data points that were over 100 to 100. This helps smooth edge cases where companies had extreme PE ratios during certain periods. Removing these data points completely caused new issues with certain companies.