Joe: My appology for forgetting to put the extra zero (43.50cm or 43.70cm). I thank you for pointing the refinement. It is the place value where *rounding* need be done. Brij Bhushan Vij
>From: [EMAIL PROTECTED] (Joseph B. Reid) >Reply-To: [EMAIL PROTECTED] >To: "U.S. Metric Association" <[EMAIL PROTECTED]> >Subject: [USMA:21401] Re: Heart beats >Date: Sun, 28 Jul 2002 13:39:30 -0400 > >Brij Bhushan Vij wrote in USMA 21395: > > >I think we can preresrve our hearts from 'beating or bleeding'. The SI > >manuals are clear on the subject that *ROUNDING* off must be done to keep > >the results at its most updated values - so if the result is 1, 2, 3, 4 >at > >the last digit 'ignore it' and if it is FIVE (5) or above take it to the > >next higher place after the decimal point.! > > For example: 43.54 cm could be rounded to 44 cm (or 43.5 cm) and 43.67 >cm > >could be rounded to 44 cm (or 43.7 cm). I suppose this is being done > >already. > >Brij Bhushan Vij > > >Those rules will produce a slight tendency for the mean of a set of figures >to increase after rounding. For example: > 23.49 rounds to 23 > 23.51 rounds to 24 > 23.50 rounds to 24 >The refined rule would round 23.50 to 24, but would also round 24.50 to 24. >The skewing of the mean after rounding is more pronounced after rounding >only one digit. Thus: > 23.4 rounds to 23 > 23.5 rounds to 24 >The refined rule is that > 23.5 rounds to 24 >but 24.5 also rounds to 24 > >I have not be able to write a simple computer subroutine to handle this >more strict rule, so I have ignored the problem. > >Joseph B.Reid >17 Glebe Road West >Toronto M5P 1C8 Tel. 416 486-6071 _________________________________________________________________ Join the world�s largest e-mail service with MSN Hotmail. http://www.hotmail.com
