DISPERSION By N., Pam M.S. - April 7, 2013 The degree that a group of scores deviate from the mean. Also called spread. DISPERSION: "Dispersion looks at deviation of scores from the mean." Related Psychology Terms VARIANCE SCATTER BETWEEN-GROUPS VARIANCE THREE-STRATUM MODEL OF INTELLIGENCE DIRECTIONAL HYPOTHESIS UNIMODAL DISTRIBUTION BEHAVIORAL PROFILE NORMALIZE BANDING STANDARD SCORE Cite this page: N., Pam M.S., "DISPERSION," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/dispersion/ (accessed September 11, 2019).