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A Researcher's Guide to Multiple Regression for Dose-Response and Covariate Analysis
Most bench scientists reach for a t-test or ANOVA by reflex, but plenty of real experiments have a continuous dose, groups that differ at baseline, or nuisance variation eating the power. Multiple regression handles all three, and ANOVA and ANCOVA turn out to be special cases of it. This guide covers when regression earns its place, how to read coefficients honestly, the two covariate mistakes that invalidate an analysis, and why dose-response needs a 4PL curve, not a line.
Aug 177 min read


Mastering Dose-Response Curves: A Guide to Non-Linear Regression in GraphPad Prism
Unlock the power of your biomedical data! Dose-response curves are vital, but non-linear relationships demand sophisticated analysis. This guide demystifies non-linear regression using GraphPad Prism. Learn to choose the right model, understand key parameters, set crucial constraints, and interpret results like confidence intervals and R². We cover data prep, global fitting for complex scenarios, and troubleshooting common issues like ambiguous fits. Master Prism for accurate
Nov 26, 20254 min read


Guide to Calculating and Interpreting IC50 & EC50 Values in Cell Viability Assays
Unlock the power of your cell viability data! This guide demystifies the two most critical metrics in dose-response analysis: IC
50
and EC
50
. Discover the key difference between measuring inhibition (IC
50
) and activation (EC
50
), learn the step-by-step process for calculating these values, and see how they reveal the synergistic power of combination therapies.
Sep 17, 20255 min read
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