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How can I estimate the standard deviation from stock graph without calculates, just from the graph

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Look at adding a standard deviation indicator to your charts. If your chart provider doesn't have this indicator then chose a provider that does.

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    +1, yet the question has me curious if one can estimate with any level of accuracy from looking at a chart? Would the difference between a 10%STD and 20%STD be obvious? – JoeTaxpayer Nov 26 '13 at 21:35
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One third of the distance between the largest value and the smallest value can least accurately yet most quickly manually estimate the standard deviation.

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