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Prism (and also InStat, and the QuickCalc since 5-April-2004) compute the two-sided P value using the method of summing small P values. Most statisticians ...

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This calculator computes EC 80 or EC 90 (etc.) from EC 50. How? 1. Enter EC 50 I will enter: EC 50 as concentration. For 1nM, enter '1e-9'.

https://www.graphpad.com/quickcalcs/ecanything1/

Knowing the value of chi-square and the number of degrees of freedom, you can compute a P value using this GraphPad QuickCalc web calculator, an Excel formula, ...

GraphPad FAQs

This calculator computes confidence intervals of a sum, difference, quotient or product of two means, assuming both groups follow a Gaussian distribution.

https://www.graphpad.com/quickcalcs/errorprop1/

This calculator will compute the proportion that had the first outcome (numerator/denominator) and the 95% confidence interval of that proportion.

https://www.graphpad.com/quickcalcs/confinterval1/

Analyze continuous data. Descriptive statistics, detect outlier, t test, CI of mean / difference / ratio / SD, multiple comparisons tests, linear regression.

https://www.graphpad.com/quickcalcs/contmenu/

This calculator is built for simple linear regression, where only one predictor variable (X) and one response (Y) are used.

https://www.graphpad.com/quickcalcs/linear1/

The sign test is a special case of the binomial case where your theory is that the two outcomes have equal probabilities.

https://www.graphpad.com/quickcalcs/binomial1/

Prism (up to version 5) does not compute critical values for the Dunnett or Tukey tests, but rather uses values tabulated by others.

GraphPad FAQs

While Prism cannot do logistic regression, it can use nonlinear regression to fit log(dose) vs. response curves.

GraphPad FAQs