The document discusses different types of hypotheses:
- Directional hypotheses specify the expected direction of relationships between variables, while non-directional hypotheses do not.
- Hypotheses can take declarative, null, question, or predictive forms. Declarative hypotheses state expected relationships, while null hypotheses state no relationship exists. Question hypotheses are research questions. Predictive hypotheses allow researchers to state expected principles.
- Examples are provided for each type to illustrate their meanings.