Brown, J. D. 1988. Understanding Research in Second Language Learning: A Teacher’s Guide to Statistics and Research Design. Cambridge: Cambridge University Press.
En estatística, a tendencia central dunha distribución indica o comportamento típico do grupo que conforma a mostra. As medidas da tendencia central máis empregadas son a media, a mediana e a moda.
Bibliografía:
Butler, C. 1985. Statistics in Linguistics. Oxford: Blackwell.
Eddington, D. 2015. Statistics for Linguists: a Step-by-Step Guide for Novices. Newcastle upon Tyne: Cambridge Scholars Publishing.