what is a hypothesis?
a testable statement of prediction
what is an experimental hypothesis?
a hypothesis of an experimental method
what is an alternative hypothesis?
a hypothesis of a non-experimental method (correlation, observation etc.)
what is an aim?
state the purpose of the research in a clear and precise way
what is a directional hypothesis?
predicts a specific direction of results
what is a non-directional hypothesis?
predicts only a difference in results, or that one variable will affect another
what is a null hypothesis?