Repeatability error

The bias error is a quantity that gives the total systematic error of a measuring instrument under defined conditions. As mentioned earlier, the bias should be minimized by calibration. The repeatability error consists of the confidence limits of a single measurement under certain conditions. The mac-curacy or error of indication is the total error of the instrument, including the... 

Accuracy Decisions on machine-train or plant system condition will be made based on the data acquired and reported by the predictive maintenance system. It must be accurate and repeatable. Errors can be input by the microprocessor and software as well as the operators. The accuracy of commercially available predictive maintenance system varies. While most will provide at least minimum acceptable accuracy, some are well below the acceptable level. 

The magnitude of these errors can be analyzed in single laboratories (run bias and repeatability error), in inter-laboratory validation studies (laboratory bias) and in proficiency tests (method bias). Expressed in standard deviations relative to that of... 

The repeatability error is a random error due to the replicate measurements performed within a single run [10]. 

Within-laboratory uncertainty is derived from intermediate precision and includes only the repeatability error and the run error. 

Reproducibility uncertainty is derived from reproducibility precision (interlaboratory tests) and counts for the repeatability error, run, and laboratory... 

The FDA receives and reviews about 300 medication error reports each month and classifies them to determine the cause and type of error. Depending on the findings, the FDA can change the way it labels, names, or packages a drug product. In addition, once a problem is discovered, the FDA educates the public on an ongoing basis to prevent repeat errors. 

If the actual molarity of the acid is 0.125 M HCl, you can conclude that while the data are precise, they are far from accurate (you could take an average of the results and calculate a percent error to confirm this). This shows that the student performed the experiment consistently but with some sort of repeated error. 

Repeated error test failures occurred on the last attempted step in DDAPLUS. A singularity may be present. If you are certain you want to continue, MAIN should restart the solution from the last U value with lnfo(l)=0. 

A lot has been said about not reinventing the wheel. But how about not repeating errors Errors are like wheels that we shouldn t even have tried to invent, let alone re-invent, because this wheel was probably square in shape to start with, and there was never any chance of it succeeding. 

Equations Developed by Adhvaryu et al. for the of Base Stocks Property Prediction Repeatability Error of of Standard ... 

Machine Tool Design Evolution and Tools Even the most robustly designed machine tools with the most accurate assembly and best part program still exhibit error. Repeatable errors such as imperfectly straight axes can be measured and compensated out at the machine control... 

Bias An offset a repeatable error that is the same magnitude and direction each time. 

Today s high-quality analog models feature taut-band construction which can operate for more than 20 million cycles with a repeatability error of less than +0.02 percent. This corresponds to about 70 yr of normal use. Taut-band construction also withstands moderate shock and vibration and operates on limited power of less than 5 pW. 

XI.4.4.2 The standard deviation for repeatability for each sample was calculated from pair-wise (repeat pairs) variances pooled across the laboratories. The standard deviation for reproducibility was calculated from the variance of the mean values of each pair. This variance is equal to the sum of two variances, the variance a, due to differences between laboratories and the variance due to repeatability error a, divided by the number of replicates... 

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