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A(n)UNIQUE constraint will allow NULL values to be stored in the designated column._________________________
Violent Crime Rate
A statistical measure of the number of violent crimes reported per unit of population or given time period.
Matched Pairs
A study design where subjects are paired based on certain criteria, making them comparable, and then treated differently to examine effects.
Independent Samples
Two or more groups of samples that are collected from independent populations, and where the selection of a sample from one population does not influence the selection from another.
Significance Test
A statistical test used to determine if the observed differences between two or more groups are statistically significant.
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