Standards Development
This standard prescribes rules for rounding off numerical values for the purpose of reporting results of a test, an analysis, a measurement or a calculation, and thus assisting in drafting specifications. It also makes recommendations as to the number of figures that should be retained in course of computation.
The scope of ISO/TC 69 is standardization in the application of statistical methods, including generation, collection (planning and design), analysis, presentation and interpretation of data, and includes presentation and interpretation of data. This NWIP in essence guides for presenting the result of measurement, test or of a calculation in rounded off form thus helps in interpretation of result, data. Also ISO/TC 69/SC6 deals with measurement methods and results. This standard falls in category of ‘Measurement methods and results’ as rounding off is applicable to the measurement result before reporting.
To round off a value is to retain a certain number of figures, counted from the left, and drop the others so as to give a more rational form to the value.
For the purpose of reporting or drafting specifications the result of a test, measurement or of a calculation is generally rounded off.
It is necessary to prescribe rules for ‘rounding off’ numerical values and also for deciding on ‘the number of figures’ to be retained.
It brings uniformity in reporting of results thus useful in evaluation, comparison of result of a test, measurement or of a calculation
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