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gptkbp:instanceOf
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statistical analysis
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gptkbp:alsoKnownAs
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gptkb:t-test
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gptkbp:alternativeTo
|
gptkb:Mann-Whitney_U_test
gptkb:Welch's_t-test
gptkb:Wilcoxon_signed-rank_test
means are not equal
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gptkbp:assumes
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equal variances (for standard t-test)
independent samples
normally distributed data
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gptkbp:category
|
inferential statistics
parametric test
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gptkbp:citation
|
gptkb:Gosset,_W._S._(1908)._'The_probable_error_of_a_mean.'_Biometrika,_6(1),_1-25.
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gptkbp:contrastsWith
|
means of two groups
population mean
sample mean
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gptkbp:developedBy
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gptkb:William_Sealy_Gosset
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gptkbp:distribution
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gptkb:Student's_t-distribution
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gptkbp:field
|
gptkb:medicine
biostatistics
economics
education
engineering
psychology
social sciences
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https://www.w3.org/2000/01/rdf-schema#label
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Student's t-test
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gptkbp:limitation
|
assumes homogeneity of variance
assumes normality
sensitive to outliers
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gptkbp:namedAfter
|
gptkb:pseudonym_'Student'
|
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gptkbp:nullHypothesis
|
means are equal
|
|
gptkbp:output
|
confidence interval
p-value
|
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gptkbp:pseudonym_of
|
gptkb:William_Sealy_Gosset
|
|
gptkbp:publishedIn
|
1908
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gptkbp:relatedTo
|
gptkb:z-test
ANOVA
|
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gptkbp:software
|
gptkb:Python
gptkb:SPSS
gptkb:Excel
R
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gptkbp:statistic
|
t-value
|
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gptkbp:type
|
gptkb:independent_two-sample_t-test
gptkb:one-sample_t-test
paired sample t-test
|
|
gptkbp:used_in
|
statistics
hypothesis testing
|
|
gptkbp:usedFor
|
comparing means
small sample sizes
unknown population standard deviation
|
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gptkbp:bfsParent
|
gptkb:William_Sealy_Gosset
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gptkbp:bfsLayer
|
4
|