Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
statistical analysis
|
| gptkbp:advantage |
robust to unequal sample sizes
robust to unequal variances |
| gptkbp:alsoKnownAs |
gptkb:Welch's_unequal_variances_t-test
|
| gptkbp:alternativeTo |
means of two populations are not equal
|
| gptkbp:assumes |
independent samples
|
| gptkbp:category |
parametric test
|
| gptkbp:compatibleWith |
equal variances
|
| gptkbp:developedBy |
gptkb:Bernard_Lewis_Welch
|
| gptkbp:distribution |
t-distribution with adjusted degrees of freedom
|
| gptkbp:field |
gptkb:mathematics
statistics |
| https://www.w3.org/2000/01/rdf-schema#label |
Welch's t-test
|
| gptkbp:input |
sample means
sample sizes sample variances |
| gptkbp:introducedIn |
1947
|
| gptkbp:nullHypothesis |
means of two populations are equal
|
| gptkbp:output |
confidence interval
p-value |
| gptkbp:relatedTo |
gptkb:Student's_t-test
|
| gptkbp:statistic |
gptkb:Welch's_t-statistic
|
| gptkbp:usedFor |
comparing means of two groups
|
| gptkbp:usedIn |
data analysis
statistics hypothesis testing |
| gptkbp:bfsParent |
gptkb:Student's_t-test
|
| gptkbp:bfsLayer |
5
|