Examlex
With respect to the sampling plan, three decisions must be made: 1) the sampling unit - who is to be surveyed; 2) sample size - how many people should be surveyed; and 3) ________.
Theory
A system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
Nondirectional Research Hypothesis
A hypothesis that predicts a relationship or effect but does not specify the direction of the relationship.
Directional Research Hypothesis
A hypothesis that indicates the anticipated direction of the difference or relationship among variables.
Null Hypothesis
A type of hypothesis used in statistics that proposes that no statistical significance exists in a set of given observations.
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