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Q&A about R2 What does R2 quantify The value R2 quantifies goodness of fit. It compares the fit of your model to the fit of a horizontal line through the ...

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Many dose-response curves follow a familiar sigmoidal shape. These curves are often defined by four parameters: Top, Bottom, Hill slope, and the EC50 (or IC50).

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A competitive inhibitor reversibly binds to the same site as the substrate, so its inhibition can be entirely overcome by using a very high concentration of ...

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The EC50 is the dose of a drug that provokes a response half-way between the top plateau and bottom plateau of the dose response curve.

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Straight lines on graphs with logarithmic axes The nonlinear regression analysis fits the data, not the graph. Since Prism lets you choose logarithmic axes, ...

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Prism computes the geometric mean by computing the logarithm of all values, then calculating the mean of the logarithms, and finally taking the antilog.

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1. Create a data table From the Welcome or New Table dialog, choose to create an XY data table. If you are just getting started, choose the sample data: ...

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Prism provides a number of important options for the multiple t test (and nonparametric tests) analysis, allowing you to choose from one of numerous different ...

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In a competitive binding experiment, you use a single concentration of labeled (hot) ligand and vary the concentration of unlabeled (cold) drugs, and measure ...

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A graph showing mean and SD error bar is less informative than any of the other alternatives, but takes no less space and is no easier to interpret.

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