The calculator above will graph and output a simple linear regression model for you, along with testing the relationship and the model equation. Keep in mind that Y is your dependent …

You can use statistical software such as Prism to calculate simple linear regression coefficients and graph the regression line it produces. For a quick simple linear regression analysis, try our …

When Prism performs simple linear regression, it automatically superimposes the line on the graph. If you need to create additional graphs, or change which line is plotted on which graph, …

Prism offers two forms of simple regression: simple linear regression and simple logistic regression. Although these analyses are related, we discuss them separately.

In these cases, linear regression will fit a straight line to the data but the graph will appear curved since an axis (or both axes) are not linear. In contrast, nonlinear regression to an appropriate …

There is no linear relationship between X and Y, and the best-fit line is a horizontal line going through the mean of all Y values. When r2 equals 1.0, all points lie exactly on a straight line …

Analyze, graph and present your scientific work easily with GraphPad Prism. No coding required.

Standard Curve “Unknowns” are represented as spikes on the graph; their numerical values are shown on an embedded table pasted from the Interpolated X values subpage of the Results …

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These not only show you how to use Prism, but also review the principles of nonlinear regression, including comparing models, identifying outliers, global fitting, and more.