Assertion: sample's distribution | /r/HasProperty | approximated by the t distribution
Facets:
value: well
type: DEGREE
value: above about 20.[citation
type: OTHER
value: for sample sizes
type: PURPOSE
Source sentences:
text: For example, the distribution of Spearman's rank correlation coefficient ρ, in the null case (zero correlation) is well approximated by the t distribution for sample sizes above about 20.[citation needed]