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The Investment Policy Statement

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Sampling Methods<br />

Probability sampling: <strong>The</strong> actual selection of elements from the frame must<br />

give the elements in the frame an equal probability of selection. Random<br />

sampling provides the best way of achieving equal-probability sampling (p.<br />

128). BETTER FOR GENERALIZATIONS; MORE RIGOROUS<br />

Non-probability sampling: includes any method in which the elements have<br />

unequal chances of being selected. One such method, called convenience<br />

sampling, depends on the availability of respondents. In this procedure,<br />

subjects select themselves (p. 129)<br />

External Validity<br />

Design<br />

Generalizability of the study's findings to other populations, places or times<br />

(p. 345)<br />

True Experimental Designs<br />

(Random Assignment to Control/Comparison Group). More desirable.<br />

Control group is randomly assigned. Random selection from population into<br />

sample; random assignment of control/treatments groups.<br />

Quasi-Experimental Designs<br />

(Control/Comparison Group without Random Assignment)<br />

Pre-Experimental Designs (No Control/Comparison Group)<br />

Internal Validity<br />

Descriptive Statistics<br />

Inferential Statistics<br />

Statistical Conclusion<br />

Validity<br />

FERPA<br />

National Research Act and<br />

Institutional Review Board<br />

{IRB):<br />

Truthfulness of the assertion that the observed effect is due to the<br />

independent variables in the study (p. 346). Judge the relationship between<br />

the independent and dependent variables. RELATED TO DESIGN<br />

Describes the sample. A set of methods to describe data that we have<br />

collected (mean, standard deviation)<br />

Make inferences about population. Tests probability of sample data being<br />

hypotheses, this is a set of methods<br />

use to make a generalization, estimate, predication or decision.<br />

Refers to inferences about whether it is reasonable to presume that a<br />

relationship exists between variables (introduction presentation)<br />

Family Educational rights and privacy act {1974) is a federal law that<br />

protects the privacy of student education records (ethics presentation)<br />

Committees established by us federal regulations at each research<br />

institution to protect human subjects from abuses through prior review of<br />

research proposals

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