Week 8 organizing quantitative data for analysis Flashcards
ontology
concerned with what is true/real and the nature of reality
epistemology
concerned with the nature of knowledge and different methods of gaining knowledge
systematic variation
due to the experimenter doing something to one condition but not the other
unsystematic variation
due to random factors that exist between experimental conditions. (e.g. true error, time of day)
observed score = what
true score + error
the perfect experiment
total variance = treatment variance
the real life experiment
total variance = treatment variance + confound variance + error variance
quantitative data collection methods
questionnaires, statistical analysis
4 different levels of measurement that form basis of statistical analysis
Nominal, Ordinal, Interval, Ratio
Nominal data
Categories not related in any way. participant can only belong in one group
Ordinal data
Rank position in a group, but nothing about the distance between the ranks.
Interval data
Equal intervals between numbers on the scale continuous variable. There is no absolute 0 point
Ratio data
Same as interval. There is an absolute 0.
