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CalEst
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CalEst is a statistics package which also includes probability functions as well as tutorials to enhance the learning of Statistics and Probability. It was developed at CONTECK by researchers Jorge Dominguez and Axel Dominguez. Statistics functions CalEst includes several Statistical functions, such as: Anova, Regression analysis, Inference (Statistical hypothesis testing), Descriptive statistics (Histogram, Pie Chart, Stemplot among other graphics as well as Summary statistics like Arithmetic mean, Median, Mode and more). Probability distributions CalEst incorporates 16 probability distributions. The user can use the graphic representation of these distributions to manipulate the thresholds and the parameters. The graphic automatically adjusts itself and provides several information (e.g., area). CalEst also provides a calculator-style interface. In both cases, the user can use the density or accumulative distribution. The probability distributions included in the latest version of CalEst are: Discrete *Bernoulli distribution *Binomial distribution *Poisson distribution * Continuous *Beta distribution *Chi-squared distribution *Exponential distribution *Extreme value distribution *F-distribution *Gamma distribution *Normal distribution *Logistic distribution *Log-normal distribution *Student's t-distribution * *Weibull distribution 
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