system.kanoa.quality.spc.rule5(valueList, mean, sigma)

Rule 5: Two (or three) out of three points in a row are more than 2 standard deviations from the mean in the same direction (shift)

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Parameters

valueList list[float]: A list of values
mean Float: mean value of the valueList
sigma Float: Standard deviation of the valueList values

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Returns

ruleViolation Boolean
resultSet list[bool] ruleViolation for each value in the valueList

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Example