AccuracyRatio Measurement Decision Risk Analysis Software Features

With AccuracyRatio you can

Determine whether measurement accuracies are sufficient by calculating false accept risk and false reject risk.
Define baseline risks for a given application, corporate policy requirement, contract requirement or quality objective.
Analyze measurement process uncertainty and factor it into false accept risk and false reject risk analysis.
Establish guardbands consistent with risk requirements.
Estimate true % in-tolerance from observed % in-tolerance.
Print comprehensive analysis reports.

Measurement Decision Risk

The main functions and features for estimating risks and computing an equivalent accuracy ratio are accessed via the Main Screen.
The Risk Baseline Analysis Screen can be used to define maximum allowable false accept and false reject risks.
A plot of baseline false accept risk and false reject risk versus accuracy ratio can be displayed on the Risk vs. Baseline Accuracy Ratio Screen.

Parameter Bias Uncertainty Analysis

The Parameter Bias Uncertainty Worksheet is a useful tool for entering specifications and estimating bias uncertainties for subject and measuring parameters.
Plots of the statistical distributions for the parameter biases can also be displayed.
The change in parameter in-tolerance probability with time since calibration can be modeled via the Reliability Model Worksheet.
Once the parameter reliability behavior has been modeled, the in-tolerance probability at any time since measurement can be calculated using the % In-Tolerance Reference Screen.
The % In-Tolerance Worksheet can be used to estimate the true in-tolerance percentage from an observed percentage, or the observed in-tolerance percentage from a presumed true percentage.
AccuracyRatio also features Statistical Measurement Process Control (Bayesian) analysis for obtaining the best estimates of both subject parameter bias, measuring parameter bias and associated bias uncertainties.

Measurement Process Uncertainty Analysis

The uncertainties due to various measurement process error sources can be analyzed using the Measurement Process Uncertainty Worksheet.
The random uncertainty in measurements made using the measuring parameter and/or subject parameter can be calculated statistically by entering measurement results in the built-in Parameter Data Entry Worksheets.
SMPC analysis results for the subject and measuring parameters are displayed on the Process Measurement Uncertainty Worksheet.
Calculation of the total process uncertainty incorporates any correlation coefficients that have been established between error sources via the Correlation Coefficients List Screen.
Total process uncertainty can be included in the risk and accuracy ratio analysis.

Guardband Analysis

The Guardband Analysis Worksheet can be used to compute guardbands to achieve a desired level of false accept or false reject risk.
Guardbands can also be determined graphically using the Risk vs. Guardband Multiplier Screen.

Import External Data

AccuracyRatio is designed to import data and results directly from UncertaintyAnalyzer via the Main Screen Import menu.
The Run External Application Screen can be used to launch external Windows applications from within AccuracyRatio.
Data from external applications can then be copied and pasted into AccuracyRatio screens and worksheets.

Analysis Reports

Hardcopy reports of the risk analysis and uncertainty analysis results can be generated via the Print Analysis Screen.
The Print Analysis Screen also provides options for printing parameter bias and process error distribution plots.
The Report Options Screen provides options for specifying report header information.
AccuracyRatio also automatically generates a Summary File that can be used to generate custom reports.

Integrated Sciences Group
14608 Casitas Canyon Road � Bakersfield, CA 93306
Phone 1-661-872-1683 � FAX 1-661-872-3669