Examlex
If goods A and B are perfect substitutes, then the marginal rate of substitution of good A for good B is constant.
Validity
The extent to which a research instrument measures what it is intended to measure.
Management Information System
A system that provides managers with the tools to organize, evaluate, and efficiently manage departments within an organization.
Internal Data Sources
Sources of data that originate from within the organization, including sales records, customer databases, and financial documents.
Simple Random Sampling
A type of sampling in which everyone in the target population has an equal chance of being selected.
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