Related Experiment Video
Updated: Feb 11, 2026

Data Acquisition Protocol for Determining Embedded Sensitivity Functions
Published on: April 20, 2016
A sensitivity analysis to determine the robustness of STRmix™ with respect to laboratory calibration
Hannah Kelly1, Jo-Anne Bright1, Maarten Kruijver2
1Institute of Environmental Science and Research Limited, Private Bag 92021, Auckland, 1142, New Zealand.
Abstract:
STRmix™ uses several laboratory specific parameters to calibrate the stochastic model for peak heights. These are modelled on empirical observations specific to the instruments and protocol used in the analysis. The extent to which these parameters can be borrowed from laboratories with similar technology and protocols without affecting the accuracy of the system is investigated using a sensitivity analysis. Parameters are first calibrated to a publicly available dataset, after which a large number of likelihood ratios are computed for true contributors and non-contributors using both the calibrated parameters and several borrowed parameters. Differences in the LR caused by using different sets of parameter values are found to be negligible.
Related Concept Videos
Area Between Curves: Integrating With Respect to y
Area Between Curves: Integrating With Respect to x
Glassware Calibration
Volumetric flasks: Volumetric flasks are designed to prepare aqueous solutions of precise volumes accurately with a calibration line on the neck. To calibrate a volumetric flask, it is important to fill it with distilled...
Instrument Calibration
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
Calibration Curves: Correlation Coefficient
Plotting and Calibrating the Root Locus
The maximum gain occurs at the breakaway points between open-loop poles on the real axis, while the minimum gain is...

