Statistics Study

Statext LLC

About this app

Statistics Study

-- v4.49 June 9, 2024
(103 Statistics Function Buttons / 103 Statistics Study Notes)

The following is the list of functions this app provides:

[Descriptive Statistics]
Basic Statistics
Data Table
Box-and-Whiskers Plot
Line Plot, Stem-and-Leaf Plot, Frequency Table, and Histogram
Scatter Plot
Covariance

[Parametric Tests]
Confidence interval for the mean.
Test for a population mean
Choosing sample size for mean
Test for two population means
Test for the difference of paired sample (paired t-test)
One-way ANOVA with post hoc tests (Scheffe Test and Least Square Difference Test)
Two-way ANOVA without repetition
Two-way ANOVA with repetition
Normality Test (Chi-Square Test, Skewness Test, Kurtosis Test, Jarque-Bera Test, Shapiro-Wilk Test, Kolmogorov-Smirnov Test, and D'Agostino K-Squared Test)
Pearson Correlation
Simple Linear Regression Analysis (Linear, Quadratic, Cubic, Quartic, Square Root, Exponential, Logarithmic, Power, Reciprocal, Rational, Sigmoid)
Multiple Linear Regression Analysis
Analysis of Covariance (ANCOVA)
Bartlett's Test
Chi-Square Test for a Variance
F-Test for Two Population Variances
Bartlett's Test for Equality of Variances

[Multivariate Tests]
MANOVA test
Principal Component Analysis (PCA)

[Frequency Tests]
Chi-Square Goodness-of-Fit Test
G-Test of Goodness of Fit
Chi-Square Test of Independence
G-Test of Independence
Chi-Square Test of Homogeneity
Fisher Exact Test
McNemar Test
Test for One Population Proportion
Choosing sample size for proportion
Test for Two Population Proportions
Test for Poisson Rates

[Nonparametric Tests]
- Monte Carlo Simulation, permutation test are added to some tests.
Runs Test for One Sample (Randomness of a sequence)
Sign Test for One Sample
Wilcoxon Signed-Rank Test (nonparametric one sample)
Runs Test for two samples
Wald-Wolfowitz Runs Test for Two Samples
Mann-Whitney U Test (nonparametric two samples)
Kolmogorov-Smirnov Two-Sample Test
Sign Test for Paired Samples
Wilcoxon Signed-Rank test (paired samples)
Spearman Rank Correlation
Kruskal-Wallis H Test (nonparametric three of more samples)
Mood's Median Test (Chi-Square Median Test)
Jonckheere-Terpastra Test (Jonckheere Trend Test)
Friedman Test and Post Hoc Test after Conover
Quade Test and Post Hoc Test
Skillings-Mack Test
Durbin Test
Page's L Test
Cochran's Q Test
Kendall's Coefficient of Concordance
Siegel-Tukey Test
Levene's Test
Brown-Forsythe Test
Logrank Test (Survival Analysis)

[Statistical Tables]
Z-Table
t-Table
Chi-Square Table
F-Table

[Distributions and Probabilities]
Arcsin
Bates
Bernoulli
Beta
Beta-binomial
Beta-geometric
Beta-negative binomial
Binomial
Borel
Cauchy
Chi-square
Erlang
Exponential
F-distribution
Gamma
Gauss-Kuzmin
Geometric
Hypergeometric
Irwin-Hall
Kumaraswamy
Laplace
Logarithmic
Logistic
Logit-Normal
Lognormal
Maxwell-Boltzmann
Multinomial
Negative binomial
Negative hypergeometric
Normal
Pareto
Poisson
Rayleigh
Student's t
Weibull
Yule-Simon

[Miscellaneous]
Determinant and Inverse Matrix
System of Equations
Eigenvalues and Eigenvectors

The following works can be done also:
1. Copy and Paste
2. Switch rows and columns
3. Random number generator with size, minimum and maximum
4. Random number generator from a normal distribution with size, mean, and standard deviation
5. Settings: Significance Level

provided by STATEXT LLC.
(New Jersey, USA)

Selected version history
ver 2.9.1 Fix a bug handling comma as decimal separator; the bug was kindly reported by Carlos Abeal Pena from Spain.
ver 4.17 Add Page's L Test; suggested by Dr. Maurizio Placidi from Italy
ver 4.21 Add Brown-Forsythe Test; suggested by Wolfgang Kokoska

Ratings and reviews

I am finding the layout a little confusing, not intuitive. There is no Help tab to better explain how to use the system and testing. This is more of a refresher super math geeks than a learning tool for dummies like myself. This was not what I was expecting. I wanted randomly generated questions I could test myself against with a explanations, if desired. This is not that but appears intended for application specific tasks if you already know what you are doing.

This amazingly thorough statistics program has nearly everything one would need to complete a wide range of scientific studies. If I had this application available when I took Experimental Design and Statistics class in college (1971-1973) or Research Methods in Graduate School (1975-1977), I would have been accused of cheating and have no reason to set aside time in the Computer Lab to analyze my data! Bravo 👏

It's really good for my teaching. However, about 1/2 of my students using iOS. I wish this app also has an iOS version.

What's new

Statistics Study v4.50.1 August 18, 2024;
A bug in Eigenvalues is fixed.