Statistics Toolbox 7.0

Latest Features

Version 7.0

Released: 09 Oct 2008
 

Version 7.0, part of Release 2008b, includes the following enhancements:

• New nlmefit function to fit nonlinear mixed-effects models to data
• Support for mean-squared error and misclassification rate in cross-validation
• New confusionmat function for tabulating misclassifications by comparing known and predicted classes of observations
• Enhanced boxplot function, supporting new options that control the appearance of the plot
• Ability to export dataset arrays to text files
• Enhanced data cursors to display observation and group information for a variety of plots
• Support for hypergeometric distribution in disttool and randtool functions

See the Release Notes for details.

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Version 6.2

Released: 01 Mar 2008
 

Version 6.2, part of Release 2008a, includes the following enhancements:

• New cross-validation functions for regression, classification, and clustering
• New sequential feature selection for regression and classification
• New quasi-random numbers for space-filling designs and Monte Carlo integration
• New partial least-squares regression for multicollinear data
• New nonnegative matrix factorization for dimension reduction

See the Release Notes for details.

Version 6.1

Released: 01 Sep 2007
 

Version 6.1, part of Release 2007b, includes the following enhancements:

• Gaussian mixture distribution fitting and random number generation
• Copula parameter estimation from data
• Diagonal covariance matrix support for multivariate normal regression
• Enhanced boxplot style suitable for displaying a large number of groups
• Conversion from covariance matrix to correlation matrix

See the Release Notes for details.

Version 6.0

Released: 01 Mar 2007
 

Statistics Toolbox 6.0

• New dataset arrays for convenient organization and analysis of heterogeneous data and metadata
  • Encapsulate variables of different data types in a single array
  • Describe variables and observations using metadata, and access them by name
  • Create, manage, and operate on dataset arrays
• New categorical arrays for organizing and processing categorical data
  • Store both nominal (unordered) and ordinal data
  • Create, manage, and operate on categorical arrays
  • Use categorical arrays as input arguments in all Statistics Toolbox functions that use grouping variables
• New distribution fitting functionality for modeling outlier-prone data using empirical and Pareto models
• scatterhist function for producing scatter plots of 2-D data with marginal distributions along the axes
• linhyptest function for linear hypothesis testing of regression coefficients
• Classification and regression trees for producing objects to analyze model results
• Enhanced classify function for computing coefficients of discriminant functions defining boundaries between classification regions

See the Release Notes for details.

Version 5.3

Released: 01 Sep 2006
 
Version 5.3, part of Release 2006b, includes the following enhancements:

• New visualization capabilities -- main-effects plots, two-factor interaction plots, and multivariate charts for Design of Experiment results
• Expanded statistical process control functionality -- gage repeatability and reproducibility studies, eight new control charts, control rules for control chart data, and enhanced capability analysis functions
• New regression functionality -- multivariate regressions with missing data and multinomial regressions of discrete multicategory data, including multinomial logistic regression
• Expanded probability distributions -- multinomial PDF and random number generator
• Enhanced hypothesis testing -- new function to calculate sample size necessary for a hypothesis test to have a specified power, and improvements to Lilliefors and Jarque-Bera distribution tests to accommodate a wider range of sample sizes, significance levels, and probability distributions

See the Release Notes for details.