Examlex
If the ____________________ clause of a SELECT statement contains either scalar or record variables and if more than one row is selected, the TOO_MANY_ROWS error is raised.
Research Hypothesis
A statement of inequality between two variables. See Null hypothesis.
Four Groups
A division within a study or experiment where participants are split into four distinct sets for comparison or analysis.
P < 0.05
Indicates a probability of less than 5% that the observed results occurred by chance, suggesting statistical significance in hypothesis testing.
Nonparametric Statistical Test
A type of statistical test that does not assume an underlying distribution for the data, often used when data do not meet the assumptions required for parametric tests.
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