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Unformatted text preview: PSY031 – Basics of Hypothesis Testing Spring 2008 Page 1 of 5 Hypothesis Testing Guide Hypothesis Testing : Method for deciding whether effects are due to chance or a true effect of the independent variable or relationship between the dependent variable Step 1: State the Hypotheses: Hypothesis : An empirically testable prediction/statement about the relationship between two or more variables ¾ Types of Hypotheses: 1. Null Hypothesis (H ) = statement of no relationships ¾ H 0 : M 1 = M 2 2. Research Hypothesis (H 1 ) = prediction from theory ¾ H 1 : M 1 ≠ M 2 (non-directional hypothesis) ¾ H : M 1 > M 2 (directional hypothesis) ¾ Components of a Research Hypothesis: 1. Variables a. Dependent Variable (DV) = that which is being recorded or measured b. Independent Variable (IV) = that which is being selected/manipulated by experimenter c. Operationally Defined = defined by procedures used to measure or manipulate o DV = define procedures o IV = define levels (and basis if necessary) 2. Predicted Relationship Between Variables: a. Correlational: r - - 2 dependent variables (for this class) b. Causal: At least 1 independent variable with 2 or more levels Step 2: Determine the nature of the DV: a. Non-parametric statistics:...
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This note was uploaded on 04/07/2008 for the course PSY 031 taught by Professor Dicorcia during the Spring '08 term at Tufts.
- Spring '08