Psychology 2800E Lecture Notes - Lecture 14: Squared Deviations From The Mean, Interpolation, Papyrus 75
2 Apr 2018
School
Department
Course
Professor
Document Summary
Tables & graphs (white chpt 14 + lecture) Before any testing, decide how to handle data (how to record, how to prepare for analysis, which stats to use) Coding guide coding guide record that specifies the variables of a study, the columns they occupy in the data file, & their possible values nominal scale must state which label goes with which : ex. 1 to indicate 8am class, 2 for 11am helps to remember arbitrary #"s you assigned to each label for your code later. Mode: most common score in freq. distribution shows most typical score good for large distributions (stable), bad for small sets (varies) other con doesn"t enter into any further stat calc. Median: middlemost score in distribution calculate by lining up scores in order (low to high) then find middle. [(n+1)/2] not affected by how far other scores are from it, only by how many above/below con requires ranking & counting; limited use in further stats.
