Metodologia de la investigació: diferència entre les revisions

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==Estadística descriptiva==
==Estadística descriptiva==
*[http://www.bmj.com/content/312/7038/1079.full Statistics notes: Transformations, means, and confidence intervals]
*[http://www.bmj.com/content/309/6960/996.full?ijkey=25f0d4f4dd03d1be9756d49c595dcc32592da57d&keytype2=tf_ipsecsha Statistics Notes: Quartiles, quintiles, centiles, and other quantiles]
*[http://www.bmj.com/content/309/6960/996.full?ijkey=25f0d4f4dd03d1be9756d49c595dcc32592da57d&keytype2=tf_ipsecsha Statistics Notes: Quartiles, quintiles, centiles, and other quantiles]
*[http://www.bmj.com/content/331/7521/903.full Standard deviations and standard errors]
*[http://www.bmj.com/content/331/7521/903.full Standard deviations and standard errors]

Revisió del 12:40, 10 oct 2011