Examlex
An arithmetic column is a column that does not exist in the database but can be computed using data in existing columns.
Degrees of Freedom
The number of independent values in a statistical calculation that are free to vary.
Null Hypothesis
A statement used in statistics that proposes there is no significant difference or effect, serving as the starting point for testing.
Significance Level
A threshold in hypothesis testing that determines whether a result is statistically significant; often denoted by alpha (α).
Partitioning
The process of allocating the total sum of squares and degrees of freedom to the various components.
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