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X values are logarithm of doses or concentrations. Dose-response experiments typically use around 5-10 doses of agonist, equally spaced on a logarithmic scale.

https://www.graphpad.com/guides/prism/latest/curve-fitting/

Calculations. The default choices for the calculation options will be fine for most people (two-tailed P values, 95% confidence intervals, and ...

https://www.graphpad.com/guides/prism/latest/statistics/

This approach can categorize comparison as a “discovery” or not, but does not compute P values or confidence intervals. Don't correct for multiple ...

https://www.graphpad.com/guides/prism/latest/statistics/

Performs unpaired t test, Weldh's t test (doesn't assume equal variances) and paired t test. Calculates exact P value and 95% confidence interval.

https://www.graphpad.com/quickcalcs/ttest1/

... variables). A 2x2 table means that subjects are separated based on two factors (or questions) with two levels in each factor (groups 1 or 2 for the first ...

https://www.graphpad.com/quickcalcs/contingency1/

An alpha of 0.05 results in 95% confidence intervals, and determines the cutoff for when P values are considered statistically significant. One sample t test.

https://www.graphpad.com/guides/

This calculator assesses how well two observers, or two methods, classify subjects into groups. The degree of agreement is quantified by kappa.

https://www.graphpad.com/quickcalcs/kappa1/

To determine significance levels, calculate for each comparison: The variables are the same as used in the confidence interval calculations. But notice the ...

GraphPad FAQs

This choice only affects the sign of the difference and the confidence interval of the difference, without affecting the P value. •Choose a confidence level.

https://www.graphpad.com/guides/prism/latest/statistics/

To interpret the confidence interval of the mean, you must assume that all the values were independently and randomly sampled from a population whose values are ...

https://www.graphpad.com/guides/prism/latest/statistics/