Statistics in Psychology: Types of Data, Research Methods, and Data Classification, Exams of Statistics

Download Statistics in Psychology: Types of Data, Research Methods, and Data Classification and more Exams Statistics in PDF only on Docsity! Psychological Statistics Chapter 1 Nominal - Number is assigned to represent something or someone Ordinal - Convey order or rank alone Interval - No true zero and distributed in equal units Ratio - Have a true zero and are distributed in equal units Population - Entire set of individuals or items of interest Sample - Representative subset of a population Data from a population are termed - parameters Data from a sample are termed - statistics A researcher tests whether the dosage level of a some drug (low, high) <i>causes</i> significant differences in health. - Experiment A researcher tests whether citizens of differing political affiliations (Republican, Democrat) will show differences in attitude toward morality. - Quasi-experiment A researcher measures the relationship between annual income and life satisfaction. - Correlational A researcher assesses how students perform on exams in relation to how much time they spend watching lecture videos. - Correlational Experimental Method - -Experiment- any study that demonstrates cause -Cause has 3 components: 1. manipulation 2. randomization 3. comparison/control -Random Assignment renders groups equivalent (Requirement 2) -At least 2 groups (Requirement 3) -Experimental Group -Control Group Independent Variable (IV) - Is changed/controlled