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Skew

If you draw a chart of the frequency of symbols deviation around its mean
value, the skew measures how tilted this is in one direction or the other. Using
the skew on the chart will pick out regions trending upwards, as a positive
signal, and downwards as a negative signal.

More technnically the Skew of a distribution is defined as the sum of the cube of the differences between each value and its mean, divided by the number of values and divided again standard deviation cubed.

Using the edit button you can changed the period over which the skew is calculated and you can also select using the mean have the half the period ahead of the current point, by selected forward skew.




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