It is useful, for example, to record blood pressure in anything less than integer units (whole number with no decimal places). It many, however be meaningful to record strength to a tenth or hundredth of a kilogram. Computer programs will often record values with four or more decimal places by default. It is generally not informative, however for report results to so many places How important it is to know that a mean age is 84.5 years as opposed to 84.5283 years? Cohen suggests that such values create statistical "clutter" and are not meaningful for understanding data.