A-Analyze: Quantitation of cause the output of the process does not meet the defined which is the cause of the Defect (Xs): the mathematical equations Y = f (Xs) as the targets are not met in six sigma resort Jomtien beach Pattaya hotel is a Defect (Y), so at this stage to analyze what factors affect Birth Defect and are arranged in order of precedence to determine the cause. Secondary causes (X1, X2, X3, ....)
By the need to collect data and statistics for commercial processing. Working every step must be verifiable and clearly. Do not use the beliefs or feelings on the decision. This is. There are a variety of statistical tools.