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## ro

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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.*

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ROBUSTREG

*SAS/STAT. Procedure.* Regression.

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ROMAN

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

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ROTATE

*SAS/GRAPH. Annotate variable.*

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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.

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ROUND

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

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ROUNDE

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

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rounding error

(round' ing a^r' *u*r) *n.*

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

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ROUNDZ

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

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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.

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row

(rO') *n.*

1. a horizontal arrangements of objects.

2. a set of table cells that are aligned horizontally
in a table.

3. a set of array elements that have the same first subscript
value in a two-dimensional array.

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