Hypothesis key terms

• An alternate hypothesis (HA) is a prediction in the form of a testable sentence
• An experimental hypothesis predicts a cause and effect relationship
• A correlational hypothesis predicts a consistent association between 2 co-variables
• Directional hypothesis (One tailed) predicts the specific direction of the difference or correlation e.g positive, lower
• Non directional hypothesis (two tailed) predict that there will only be a difference or correlation
• The purpose of an alternate hypothesis is to propose an alternative explanation or relationship between variables in a research study, which is then tested against the null hypothesis.
• A null hypothesis (HO) is a prediction that any correlation found is due to chance
• Null hypothesis are always two tailed