122. If a measurement system is accurate but not precise: * ( ) The measurement system should be calibrated to minimize bias () it returns the same value every time a measurement is made by the same operator () It returns the same value every time a measurement is made by the machine ( ) The difference between the observed average of the measurements and the true value is small 123. Which of the following could be classified as common cause variation? * () None of the above () Sudden change in glucose level in a bioreactor due to sensor breakdown () Increased variation due to unexpected increase in the pH of the solution () Random small changes in a Critical-to-Ouality attribute of the product due to small random variations in the humidity of the air in the factory. 124. The general reason for sampling is: () None of the above ( ) To draw conclusions about populations by analysing the samples () Identify the presence of special causes of variation in the process () Display when the process is out of control