Marketing Research Glossary - XYZ
X Axis: The horizontal axis on a graph.
Y Axis: The vertical axis on a graph.
Zip +4: Designation by the U.S. Postal Service for the nine-digit coding structure.
Zip Code: Registered trademark of the U.S. Postal Service; a five-digit or nine-digit code identifying regions in the United States.
Zip Code Demographics: The demographic characteristics of a population living in a particular zip code.
Z-Test: A hypothesis test (for samples from populations with known variance, or for large samples from populations with unknown variance) based on the standard normal distribution, about a difference between a single mean and a known or theoretical population mean, or about differences between the means of two samples.
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