HD FS 269 Study Guide - Final Guide: Null Hypothesis, Face Validity, Central Tendency

• School: Iowa State University
• Department: Human Development and Family Studies
• Course: HD FS 269
• Professor: All

Document Summary

Theory: group of generalizations consisting of constructs that predict and explain relationships between variables. Concept: a property/attribute that all of us have (ex. Empirical: something you can see, hear, smell or touch (sensory contact) Operationalize: be able to tell how you measure the concept (ex. All concepts we cannot measure are not constructs. All constructs are concepts, but not all concepts are constructs. Generalization: a statement about if and how two constructs are related (ex. If happiness is great, than longevity is great: predictive~ statements with no supportive data, explanatory~ statements with supportive data. Hypothesis: prediction, statements with no supportive data: null hypothesis: statement that two concepts are not related, alternative hypothesis . Relationship between weight and running speed: non-directional hypothesis: says there is a relationship, but does not specify (ex. speed, directional hypothesis: gives details (ex. Monotonic: has either positive or negative relationships straight plotted line= linear relationship curved plot line= non-linear relationship.