, and the hypothesis translates the research question into a prediction of expected outcomes.
So…a hypothesis is a statement about the relationship between two or more variables that we set out to prove or disprove in our research. study.
- The variables.
- The population
- The relationship between the variables.
- stated clearly using appropriate terminology;
a statement of relationships between variables;
limited in scope (focused)
Examples of a hypothesis are:
Types of hypotheses
- Simple hypothesis - this predicts the relationship between a single independent variable (IV) and a single dependent variable (DV)
|For example: |
- IV = independent variable
- D V = dependent variable
- Complex hypothesis - this predicts the relationship between two or more independent variables and two or more dependent variables.
1. Example of a complex multiple independent variable hypothesis:
ow risk pregnant women
2. Example of a complex multiple dependent variable hypothesis:
The implementation of an evidence based protocol for urinary incontinence (IV) will result in (DV)
- Directional hypotheses
These are usually derived from theory .
- Non-directional hypotheses
- Associative hypotheses
Propose relationships between variables - when one variable changes, the other changes .
- Causal hypothesese
A format for stating causal hypotheses is:
The subjects in the experimental group who are exposed to the independent variable demonstrate greater change, as measured by the dependent variable, than do the subjects in the control group who are not exposed to the independent variable
- Null hypotheses
- Testable hypotheses