STA: Statistical Toolbox (v. 1.0) Разработано Evolve |
TOOL FOR STATISTICS AND PROBABILITY THEORY.
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Features
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- Distribution tool
- Statistical tests
- Descriptives
Besides these areas, the application supports saving, loading, and deleting datasets where applicable.
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Distribution tool
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The distribution tool offers the following features: plot the pdf/pmf, properties (like mean value, variance, and support), cumulative probability, point mass/density, quantiles, and generating/sampling from the distribution.
Discrete probability distributions: Binomial, Hypergeometric, Negative binomial (or Pascal as it is also called), Poisson, uniform, and Zipf
Continuous probability distributions: Beta, Cauchy, Chi^2 (Chi squarred), Exponential, F (or Fisher-Snedecor as it is also called), Gamma, Normal (or Gaussian as it is also called), Student's t, uniform, and Weibull
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Statistical tests
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- One way ANOVA
- Chi^2 tests: Pearson's Chi^2 test for independence and observed vs expected counts
- Correlation tests: Pearson's correlation and Spearman's correlation
- Student's t-tests: One sample and two sample (both homoscedastic and heteroscedastic are supported)
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Descriptives
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- Plot a histogram
- Summary statistics as: number of observations, min, max, mean, standard deviation, variance, median, skewness, and kurtosis
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[2011-09-07] Charles: WBC All I can say is: WOW! |
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[2011-08-03] David: excellent app. very useful. |
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[2011-05-13] Laicey: really useful |
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[2011-04-07] Javier: It's an awesome app, though i'd love better graphing since it's very limited. |
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[2011-03-24] Paul: Awesome! Can't believe it's free! Development wish list would be to include Weibull B10 calls for reliability, but I still use this a lot. |
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[2011-03-22] gatot: Amazing!!! |
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[2011-03-05] Ananda: Awesome app! Like having all the stats tables in my pocket. UI could use a little more polish. |
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[2011-02-01] Xirun: it is free! |
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[2011-02-01] Steven: it is free! |
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[2010-09-17] sebaben: The best tool on my phone, realmente muy bueno! |
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[2010-08-24] David: It is really useful!!! Extremely comprehensive and have very good functions!! |
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[2010-08-22] Mikkel Meyer: doubledave: Do you mean variance in general or for a particular distribution? Sample variance can be found under Descriptives. Please mail me :-). |
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[2010-08-21] doubledave: Great for binomial distribution probability problems. Edit: is there a way to find variance for uniform probability distribution? |
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[2010-08-11] C: Does the job... |
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[2010-07-18] David: Very useful. I wish it had a number pad for data entry. Thanks! |
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