Plot the receiver-operator characteristic (ROC) curve to visualize the accuracy of a diagnostic test.
Select a cell in the dataset.
On the Analyse-it ribbon tab, in the
Statistical Analyses group, click Diagnostic, and then under the Accuracy heading, click ROC Curve.
The analysis task pane opens.
In the True state drop-down list, select the true condition variable.
In the Positive event drop-down list, select the state
that indicates the presence of the condition/event of interest.
In the Y drop-down list, select the diagnostic test variable.
To show a bi-histogram of the distributions of the diagnostic test by the true condition, On the Analyse-it ribbon tab, in the Diagnostic Accuracy group, click Bi-Histogram
To show the diagnostic accuracy for each decision threshold, On the Analyse-it ribbon tab, in the Diagnostic Accuracy group, click Sensitivity / Specificity, Likelihood ratio, Predictive value.