Preferred Label : t-Test;
NCIt related terms : t test;
NCIt definition : A statistical hypothesis test based on a test statistic whose sampling distribution
is a t-distribution. The term t-test is often used in a narrower sense: it refers
to a popular test aimed at testing the hypothesis that the population mean is equal
to some value m (see also t-statistic). The most popular t-tests are aimed at testing
the following hypotheses: 1. The population mean is as hypothesized (the population
variance is not known); 2. The means of two populations are equal (the population
variances are not known but equal); 3. The means of two populations are equal (the
population variances are not known and not equal); 4. The correlation coefficient
for two random variables is zero; 5. The slope of the population regression line is
zero.;
Alternative definition : CDISC-GLOSS: A statistical test used to compare the means of two groups of test data.; NCI-GLOSS: A statistical test that is used to find out if there is a real difference
between the means (averages) of two different groups. It is sometimes used to see
if there is a significant difference in response to treatment between groups in a
clinical trial.;
Codes from synonyms : CDR0000467868;
Origin ID : C53231;
UMLS CUI : C0871472;
Semantic type(s)
- concept_is_in_subset
