Syntax - Stata

Syntax - Stata

2cluster kmeans and kmedians— Kmeans and kmedians cluster analysis Options Main k(#) is required and indicates that # groups are to be formed by the cluster analysis.

  Syntax

Syntax Description - Stata

2substr()— Extract substring Diagnostics In substr(s, b, l) and substr(s, b), if b describes a position before the beginning of the string or after the end, "" is returned.

  Descriptions, Stata, Syntax, Syntax description

Title stata.com generate — Create or change …

Title stata.com generate — Create or change contents of variable SyntaxMenuDescriptionOptions Remarks and examplesMethods and formulasReferencesAlso see Syntax Create new variable generate type newvar

  Change, Content, Variable, Create, Stata, Generate, Generate create or change, Generate create or change contents of variable

SyntaxDescriptionRemarks and examplesAlso see

macro— Macro definition and manipulation 3 Macro extended functions related to matrices rownamesjcolnamesjrowfullnamesjcolfullnames matname roweqjcoleq

  Syntaxdescriptionremarks and examplesalso see, Syntaxdescriptionremarks, Examplesalso

Title stata.com graph box — Box plots

graph box— Box plots 3 Menu Graphics > Box plot Syntax graph box yvars if in weight, options graph hbox yvars if in weight, options where yvars is a varlist options Description

  Plot, Box plot

Title stata

area options — Options for specifying the look of special areas 3 Also see [G-2] graph dot — Dot charts (summary statistics)

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www.stata.com

2cluster dendrogram— Dendrograms for hierarchical cluster analysis The height of the vertical lines and the range of the (dis)similarity axis give visual clues about the

Title stata.com putexcel — Export results to an Excel …

putexcel— Export results to an Excel file 3 export options Description Main overwritefmt overwrite existing cell formatting when exporting new content

  Putexcel

destring — Convert string variables to numeric ... - …

Title stata.com destring — Convert string variables to numeric variables and vice versa SyntaxMenuDescription Options for destringOptions for tostringRemarks and …

  Title, Variable, Stata, Numeric, String, Convert, Title stata, Destring convert string variables to numeric, Destring

Title stata.com gettoken — Low-level parsing

Title stata.com gettoken — Low-level parsing SyntaxDescriptionOptionsRemarks and examplesAlso see Syntax gettoken emname1 emname2: emname3, parse("pchars") quotes qed(lmacname) match(lmacname) bind

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STATISTICAL TABLES - Transportation Research Board

Table C-8 (Continued) Quantiles of the Wilcoxon Signed Ranks Test Statistic For n larger t han 50, the pth quantile w p of the Wilcoxon signed ranked test statistic may be approximated by (1) ( 1)(21) pp424 nnnnn wx +++ == , wherex p is the p th quantile of a standard normal random variable, obtained from Table C-1.

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14.1 The Wilcoxon Rank Sum Test - University of Florida

lations have identical distributions when the rank sum is far from its mean.* W W 14.1 The Wilcoxon Rank Sum Test 1 2 12 1 12 5 This test was invented by Frank Wilcoxon (1892–1965) in 1945. Wilcoxon was a chemist who met statistical problems in his work at the research laboratories of American Cyanimid Company. The Wilcoxon rank sum test

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Two-Tailed Test One-Tailed Test α - University of Florida

Critical Values of the Wilcoxon Signed Ranks Test Two-Tailed Test One-Tailed Test n α = .05 α = .01 α = .05 α = .01 5 -- -- 0 -- 6 0 -- 2 -- 7 2 -- 3 0 8 3 0 5 1 9 5 1 8 3 10 8 3 10 5 11 10 5 13 7 12 13 7 17 9 13 17 9 21 12 14 21 12 25 15 15 25 15 30 19 16 29 19 35 23 17 34 23 41 27 18 40 27 47 32 19 46 32 53 37 20 52 37 60 43

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Statistics: 2.2 The Wilcoxon signed rank sum test

The Wilcoxon signed rank sum test is another example of a non-parametric or distribution free test (see 2.1 The Sign Test). As for the sign test, the Wilcoxon signed rank sum test is used is used to test the null hypothesis that the median of a distribution is equal to some value. It can be used a) in place of a one-sample t-test b) in place of ...

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Types of Statistical Tests - University of Phoenix

• What to use if assumptions are not met: Wilcoxon Signed Rank Test. One-way ANOVA (Analysis of Variance) • Measures: • Dependent (continuous) • Independent (categorical, at least 3 categories) • When to use: When assessing means between 3 or more groups • Assumptions:

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Table of critical values for the Wilcoxon test

Wilcoxon's test statistic to the critical value in the table (taking into account N, the number of subjects). Your obtained value is statistically significiant if it is equal to or SMALLER than the value in the table. e.g.: suppose my obtained value is 22, and I had 15 participants.

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Nonparametric statistics and model selection

5.1.3 Wilcoxon’s signed-rank test The two-sample ttest we discussed in Chapter 2 requires us to use the central limit theorem to approximate the distribution of the sample mean as Gaussian. When we can’t make this assumption (i.e., when the number of samples is small and/or the distributions are very

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The Friedman Test - oak.ucc.nau.edu

Wilcoxon Signed Ranks Test Ranks 19a 11.21 213.00 3b 13.33 40.00 8c 30 20d 13.88 277.50 6e 12.25 73.50 4f 30 10g 10.85 108.50 13h 12.88 167.50 7i 30 Ne gati v R nks Po sit ve Rank Ties Total Ne gati v R nks Po sit ve Rank Ties Total Ne gati v R nks Po sit ve Rank Ties Total Cl m - P y S cur y- P S cur y - Cl m N Mean Rank Sum of Ranks a ...

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