SOFTWARE/STATA

 

Basic statistics

Summaries
  • arithmetic, geometric, and
    harmonic means, and
    corresponding confidence intervals
  • medians and percentiles
  • measurement of central tendency
  • skewness and kurtosis
  • confidence intervals
    • exact binomial (Clopper–Pearson)
    • Wald
    • Wilson*
    • Jeffreys*
    • Agresti*
    • exact Poisson
  • ratios, proportions, and totals*
    • confidence intervals
    • standard errors
    • over groups
    • robust and cluster–robust SEs
    • intragroup tests
Tables and tabulations
  • 1-, 2-, n-way
  • Pearson chi-squared
  • likelihood-ratio chi-squared
  • Cramer's V
  • Fisher's exact (2 x 2 and r x c)
  • Goodman and Kruskal's gamma
  • Kendall's tau
  • cell statistics
    • expected count
    • contribution to Pearson's chi-squared
    • contribution to likelihood-ratio chi-squared

Noninteger confidence intervals* Parametric tests

  • t test (one- and two- sample)
  • binomial (one-sample) test
  • test of proportions (two-sample)
  • Bartlett's test
  • chi-squared (one-sample) variance test
  • variance ratio (two-sample) F test
  Correlations
  • Pearson simple and partial
  • Spearman's rank order
  • Kendall's rank order
  • intracluster
  • Cronbach's alpha
  • tetrachoric*
  • canonical (multivariate) correlations
Table of summary statistics
  • over groups and/or variables
  • statistics may include: mean, count, sum min, max, range, standard deviations, variance, coefficient of variation, standard error of mean, skewness, kurtosis, median, percentiles, and interquartile range
Create datasets of summary statistics
  • statistics by group of sub-group of observations
  • statistics: mean, standard deviation, count, min, max, median, percentiles, interquartile range

* New in Stata 9

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