ODBC Odds Ratio OLE DB On-Line Analytic Processing (OLAP) One-of-N Encoding (in Neural Networks) One-Off (in Neural Networks) One-Sample t-test "One-sided" Ranges or Error Bars in Range Plots One-way Tables Operating Characteristic Curves Ordinal Multinomial Distribution Ordinal Scale Outer Arrays Outliers Outliers (in Box Plots) Overdispersion Overfitting Overlearning (in Neural Networks) Overparameterized Model