title: Goldilocks and variability.
authors.affiliation: School of Nursing, University of Pennsylvania, Philadelphia.
authors.forename: L R
authors.initials: LR
authors.lastname: Tulman
authors.forename: B S
authors.initials: BS
authors.lastname: Jacobsen
mesh_terms: D003627:Data Interpretation, Statistical; D006801:Humans; D012106:Research; D012107:Research Design; D013223:Statistics as Topic