BNAD 276 Lecture Notes - Lecture 2: Blind Experiment, Experiment, Level Of Measurement

• School: University of Arizona
• Department: Business Administration
• Course: BNAD 276
• Professor: Suzanne Delaney

Document Summary

Review: dependent variable: the variable being measured by investigator (what are you measuring). Independent variable: the factor that is being manipulated (or compared) by the experimenter (how do your groups differ). Random assignment: any subject had an equal chance of getting assigned to either condition, random assignment = true experiment, no random assignment = quasi experiment, quasi-experiment: correlation. Within vs between: within-participant design: each subject participates in every level of independent variable (aka repeated measures), between-participant design: each subject participates in only one level of independent variable. Continuous vs discrete: continuous variables: variables that can assume any value, discrete: variables that can only assume whole numbers. Four levels of measurement: nominal data - classification, differences in kind, names of categories, ordinal data - order, rankings, differences in degree. Interval data - measurable differences in amount, equal intervals: ratio data - measurable differences in amount with a true zero , true zero: has the meaning of none .