StatsCalc 4+

Short Description:

Computes descriptive statistics of quantitative variables.

Performs statistical tests and computes confidence intervals in one, two and multiple-sample situations.

Provides regression analysis using linear, exponential and power-law models.

Computes probabilities and quantiles for standard statistical distributions.

Provides statistics features usually found on hand-held calculators.

Accuracy of numerical results tested against Wolfram Mathematica.

Features:

Data Entry:

Easy (list-based) entry of quantitative and categorical data, and two-way tables.

Voice-based data entry (Siri) is possible.

One-Sample Methods:

Z-Test for the Mean.

Z-Interval for the Mean.

T-Test for the Mean.

T-Interval for the Mean.

Wilcoxon Signed Rank Test.

Chi-squared Test for the Standard Deviation.

Chi-squared Interval for the Standard Deviation.

One-Proportion Z-Test.

One-Proportion Z-Interval.

Chi-squared Test for Goodness-of-Fit.

Two-Sample Methods:

Z-Test for Two Means.

Z-Interval for Two Means.

T-Test for for Two Means (Assuming Equal Variances).

T-Interval for Two Means (Assuming Equal Variances).

T-Test for for Two Means (Assuming Unequal Variances).

T-Interval for Two Means (Assuming Unequal Variances).

F-Test for for Two Standard Deviations.

F-Interval for Two Standard Deviations.

Two-Proportion Z-Test.

Two-Proportion Z-Interval.

McNemar Test.

Multiple Sample Methods:

One-way ANOVA.

Chi-squared Test for Independence.

Cochran's Q-Test

Correlation and Regression:

Two-Variable Descriptive Statistics.

T-Test for Correlation.

Linear Model Fit and Regression Analysis.

Exponential Model Fit and Regression Analysis.

Power-Law Model Fit and Regression Analysis.

Spearman Rank Correlation.

Probability Theory:

Distribution Calculator: Contains methods for computing probabilities and quantiles for standard statistical distributions.

Computes Mean, Variance and Standard Deviation for a Discrete Random Variable.