Examlex
In a data warehouse,_____ means collecting data from a variety of sources and converting it into a format that can be used in transformation processing.
Significance Level
The probability of rejecting the null hypothesis in a statistical test when it is actually true, usually set before the experiment.
Seat Belts
Devices aimed at protecting vehicle passengers from injurious motions that might occur in the event of an accident or abrupt halt.
Chi-Squared Test
A statistical test used to determine if there's a significant difference between the observed frequencies and the expected frequencies in one or more categories.
Nominal Variables
Categorical variables that represent qualitative data with no intrinsic ordering or ranking between the categories.
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