01:830:200 Lecture Notes - Lecture 1: Decimal Mark, South Dakota Highway 10, Null Hypothesis

• School: Rutgers University
• Department: Psychology
• Course: 01:830:200
• Professor: S.Kilianski

Document Summary

Fundamental principles and basic terminology: measurement, reliability = consistency. If you measure a variable repeatedly, it should yield the same result every time. If a scale gives you the same weight every time, it is reliable: validity = accurately measuring what it is you"re supposed to be measuring. If a scale gives you the same but incorrect weight every time, it is reliable but invalid: levels of measurement, nominal (also referred to as categorical data ; dichotomous if only two categories, discrete, mutually counts/percentages only. exclusive categories. Interval/ratio (also referred to as scale or continuous variables) (called continuous variables because they don"t have to be whole numbers: values represent true quantities. Intervals between each value are equal, so all math operations can be carried out: ratio variables have true 0 value represents the absence of the property. 1: i got 0 questions wrong and was in 0 auto-accidents.