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