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:: Free Statistics Software (Calculator) - Web-enabled scientific services & applications ::
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The non-commercial (academic) use of this software is free of charge. The only thing that is asked in return is to cite this work when results are used in publications.
Free Descriptive Statistics Software (Calculators): | Main Menu | return to Main Menu
| | | | Central Tendency | arithmetic mean, geometric mean, harmonic mean, median, midrange, midmean, robustness of central tendency (winsorized and trimmed mean), etc...
| | | | Variability | range, variance, standard deviation, variation, MSE, absolute deviation, interquartile difference, coefficient of quartile variation, Gini's mean difference, Leik's D, dispersion, diversity, qualitative variation, mean square deviation, etc...
| | | | Concentration | entropy, exponential index, Herfindahl, variation coefficient, Gini coefficient, Lorenz curve, etc...
| | | | Moments | general, non centered & centered moments, trimmed moments
| | | | Skewness/Kurtosis | Fisher 3rd centered moment, Fisher beta 1 & gamma 1, Pearson, Yule's skewness (according to 8 different quartile definitions), Beta, Gamma, small sample skewness, Fisher 4th centered moment, Fisher beta 2 & gamma 2, small sample kurtosis, etc...
| | | | Quartiles | weighted average, empirical distribution, closest observation, TrueBasic(TM), Excel(TM), etc...
| | | | Percentiles | normal probability plot, weighted average, empirical distribution, closest observation, TrueBasic(TM), Excel(TM), etc...
| | | | Histogram | mean, standard deviation, range, interval size, goodness of fit, etc...
| | | | Correlation | Pearson correlation, covariance, determination coefficient, scatter plot, etc...
| | | | Partial Correlation | Pearson Product Moment Partial Correlation.
| | | | Rank Correlation | Spearman Rank Order Correlation (corrected and non-corrected).
| | | | Simple Regression | general linear model, mean and variances, covariance, correlation, least squares estimation, parameters, response, significance, determination coefficient, ANOVA, residuals, autocorrelation, model selection, model performance, etc...
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To cite Wessa.net in publications use:
Wessa, P. (2008), Free Statistics Software, Office for Research Development and Education,
version 1.1.17, URL http://www.wessa.net/
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Software Version : 1.1.17
Algorithms & Software : Prof. dr. P. Wessa
Facilities : Resa R&D - Office for Research, Development, and Education
Server : www.wessa.net
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