Monitoring statistics

How should the health monitor statistics be used, and will this impact the model outputs that are provided to the customer (e.g., should high T IQ results disable the usage of model outputs for control pnrposes, or should they only generate alarms )... 

Monitoring statistics starts with a random variable design to find and describe a toxic chemical site by a mean and a variance. 

Note that If beta equals alpha, beta Is one fourth of the traditionally allowed type II error (l.e.,. 05 Instead of. 20). This shows that the unthinking use of textbook examples or traditional confidence levels can be dangerous to the environment and public health. Pollution monitoring statistics must have Its own beta calculations. 

Calibration control standards (CCSs) are used to check calibration. The CCS is the first sample analyzed after calibration. Its concentration may or may not be known, but it is used for successive comparisons. A CCS may be analyzed periodically or after a specified number of samples (say, 20). The CCS value can be plotted on a control chart to monitor statistical control. 

When or SPE charts exceed their control limits to signal abnormal process operation, variable contributions can be analyzed to determine which variable (s) caused the inflation of the monitoring statistic and initiated the alarm. The variables identified provide valuable information to plant personnel who are responsible for associating these process variables with process equipment or external disturbances that will influence these variables, and diagnosing the source causes for the abnormal plant behavior. The procedure and equations for developing the contribution plots was p-resented in Section 3.4. 

The concept of hypothesis testing has been applied to off-line radiological measurement techniques used in the RETS for both in-plant and environmental monitoring. Statistically valid multipliers, the random variation of the background, and... 

Ideally, as in the case of reactive monitoring, statistical evidence as to the proactive performance will also be provided in such reviews. 

In fact, there is wide variation in the points of emphasis of the various standardized auditing systems. Kuusisto divides the areas of inquiry into four broad categories policy, organization, and administration hazard control and risk analysis motivation, leadership, and training and monitoring, statistics, and reporting. Which components are emphasized in the final score depends on the system. Kuusisto describes the differing emphases of three systems in Table 7.2. 

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