Normalized Histogram ,The histogram plot is a graph that displays the frequency distribution of the gage error of appraisers who participated in the study. It also shows their combined frequency distribution.
If the reference values are available:
Error = Observed Value – Reference Value
Otherwise:
Normalized Value = Observed Value – Part Average
The histogram plot provides a quick visual overview of how the error is distributed. Issues such as whether bias or lack of consistency exists in the measurements taken by the appraisers, can be identified even before the data are analyzed.
Analysis of the histograms reinforces that of the error charts. They also indicate that only appraiser B has a symmetric form. This may indicate that appraisers A and C are introducing a systematic source of variation which is resulting in the biases.
Normalized Histogram
source of Normalized Histogram Analysis of measurement systems
