TTEST

This is comparable to SAS PROC TTEST.

t-test

This is a core implementation of 'SAS' procedures for linear models - GLM, REG, ANOVA, TTEST, FREQ, and UNIVARIATE. Some R packages provide type II and type III SS. However, the results of nested and complex designs are often different from those of 'SAS.' Different results does not necessarily mean incorrectness. However, many wants the same results to SAS. This package aims to achieve that.
Reference: Littell RC, Stroup WW, Freund RJ (2002, ISBN:0-471-22174-0).

Kyun-Seop Bae

sasLM

'SAS' Linear Model

TTEST function

<dl> <dt>x</dt>
<dd>a vector of data from the first (test, active, experimental) group</dd> <dt>y</dt>
<dd>a vector of data from the second (reference, control, placebo) group</dd> <dt>conf.level</dt>
<dd>confidence level</dd></dl>

Arguments

Author

Independent two groups t-test comparable to PROC TTEST — TTEST

<dl>

 <dt>x</dt>
<dd>a vector of data from the first (test, active, experimental) group</dd>

 <dt>y</dt>
<dd>a vector of data from the second (reference, control, placebo) group</dd>

 <dt>conf.level</dt>
<dd>confidence level</dd>

</dl>

TTEST: Independent two groups t-test comparable to PROC TTEST

Description

Usage

Value

Arguments

Author

Details

See Also

Examples