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statistical tests, charts, probabilities and clear results. automatically checks assumptions, interprets results and outputs graphs, histograms and other charts.

medcalc is a comprehensive statistical software package for biomedical research. free trial available.

online statistics calculator: hypothesis testing, t-test, chi-square, regression, correlation, analysis of variance, cluster analysis

use this standard deviation calculator to find the standard deviation, variance, sum, mean, and sum of differences for the entered set of data.

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