$O /\$

ro

robust

(rO bust') adj.

1. working effectively in a range of circumstances; not adversely affected by small changes in related objects.

2. Statistics. producing a useful estimate or result for a sample that has adverse qualities, as when size is small or uneven, data contains unusual observations, or population distribution assumptions are not met.

robustness, n.

ROBUSTREG

SAS/STAT. Procedure. Regression.

ROMAN

Format. Roman numerals. Ref: PSPPR:Formats:Numeric Formats. PSPL:Informats and Formats:Numeric Fields. SLRD:Formats.

ROTATE

SAS/GRAPH. Annotate variable.

round

(round') v.t.

to convert a numeric value to a nearby value that belongs to a specific set, such as the set of integers or the set of double precision values. For example, 14.8 rounded to the nearest integer is 15.

ROUND

Function. Round to nearest multiple. Ref: PSPPR:Functions. PSPL:Functions and CALL Routines:Mathematical Functions. SLRD:Functions and CALL Routines.

ROUNDE

Function. Round to nearest multiple. Ref: PSPPR:Functions. SLRD:Functions and CALL Routines.

rounding error

(round' ing a^r' ur) n.

the difference between an exact quantity and the approximation of it in a digital representation of the quantity.

ROUNDZ

Function. Round to nearest multiple. Ref: PSPPR:Functions. SLRD:Functions and CALL Routines.

routine

(rOO tEn') n.

a program that is used as part of another program; subprogram; program unit. The most familiar kind of routine is the function. In the structured programming model, a program is built out of a large number of short, simple routines.