PEDS109 Lecture Notes - Stopwatch, Measuring Instrument
28 Apr 2013
School
Department
Course
Professor
Document Summary
Sept 5 intro to measurement and evaluation. Why do we need data: data (info, measurements or observations) are required to make an. Informed decision : variable: a variable refers to the phenomenon or attribute or. Skiers wanna know what the temperature and wax their skis accordingly) We need data that allows us to make valid inferences: we shouldn"t talk about the validity of tests; talk about the validity of inferences we make from test scores, validity is a fancy word for the word truthful. The nature of measurement and evaluation: measurement: the act of assessing, measurement is complete when a score (ex. Variable) being assessed: measurement is the act of assessing and assigning a numerical value to a variable, quantitative data: data that is based on numbers, qualitative data: measurement applies/relates to the properties of the objects (ex. Variables that are under investigation, rather than to the objects themselves) (ex.
