# 'descriptive' package

## List of functions

This is a package for descriptive statistics, both univariate and multivariate. A list of available functions follow.

Functions for data manipulation:

• continuous_freq: frequencies for continuous data
• discrete_freq: frequencies for discrete data
• subsample: subsample extraction
• transform_sample: sample transformations

Univariate descriptive statistics:

• mean: sample mean
• smin: sample minimum value
• smax: sample maximum value
• range: the range
• noncentral_moment: non central moment
• central_moment: central moment
• var: variance (divided by n)
• std: standard deviation based on var
• var1: variance (divided by n-1)
• std1: standard deviation based on var1
• median: median
• quantile: p-quantile
• qrange: interquartilic range
• skewness: skewness coefficient
• kurtosis: kurtosis coefficient
• harmonic_mean: harmonic mean
• geometric_mean: geometric mean
• cv: variation coefficient
• mean_deviation: mean deviation
• median_deviation: median deviation
• pearson_skewness: Pearson's skewness coefficient
• quartile_skewness: quartilic skewness coefficient

Multivariate descriptive statistics:

• cov: covariance matrix (divided by n)
• cov1: covariance matrix (divided by n-1)
• cor: correlation matrix
• global_variances: gives a list with
• total variance
• mean variance
• generalized variance
• generalized standard deviation
• efective variance
• efective standard deviation
• list_correlations: gives a list with
• precision matrix
• multiple correlation coefficients
• partial correlation coefficients
• principal_components

Statistical diagrams:

• scatterplot
• histogram
• barsplot
• boxplot
• piechart
• stemplot
• starplot

Inside Maxima, type describe(function_name)\$ to read the documentation on any function.

## Sessions

This is a collection of sessions made with package descriptive: