Added to T2Ramsey tutorial residual plot

docs/manuals/characterization/t2ramsey.rst

@@ -101,6 +101,21 @@ frequency.
     for result in expdata1.analysis_results():
         print(result)
 
+If we would like to see the residual plot, we should set ``plot_residuals=True`` in
+the analysis options:
+
+.. jupyter-execute::
+
+    # Set to ``True`` analysis option for residual plot
+    exp1.analysis.set_options(plot_residuals=True)
+
+    # Run experiment
+    expdata1 = exp1.run(backend=backend, shots=2000, seed_simulator=101)
+    expdata1.block_for_results()  # Wait for job/analysis to finish.
+
+    # Display the figure
+    display(expdata1.figure(0))
+
 
 Providing initial user estimates
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~