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- Path: sparky!uunet!olivea!apple!constellation!a.cs.okstate.edu!norman
- From: norman@a.cs.okstate.edu (Norman Graham)
- Newsgroups: comp.programming
- Subject: Re: 400% makes sense
- Message-ID: <1992Jul28.235724.26076@a.cs.okstate.edu>
- Date: 28 Jul 92 23:57:24 GMT
- References: <w2mmnc-.pdh@netcom.com>
- Organization: Oklahoma State University
- Lines: 50
-
- From article <w2mmnc-.pdh@netcom.com>, by pdh@netcom.com (Phil Howard ):
- > norman@a.cs.okstate.edu (Norman Graham) writes:
- >
- >>Not exactly. 400% is a nonsensical term. Percent (%) means 'per hundred' or
- >>'of each hundred', and thus is only meaningful for values between 0 and
- >>100 (inclusive). Percent is best used for absolute measurements, rather
- >>than relative comparisons such as the above example.
- >
- > I do not see where any limit must exist. Dividing 400 by 100 leaves 4.
- > It's not a negative number. It's not an imaginary number. It's 4.
-
- If you view percent as simply meaning 'divide by 100', then you're
- correct of course. But then, if that's all percent means, then what's
- the point of using it? Does 400% somehow communicate more effectively
- than 4?
-
- The point that I was trying to make is that, for many people, percent
- means more than just 'divide by 100': It also carries the idea of
- 'part of the whole'. IMHO, if you're not talking about some part of
- a whole (i.e. 0% to 100%) then there is nothing to be gained from
- using the percent notation.
-
- Of course, this is just my personal percent usage rule. It's obvious
- from literature and advertisements that many people either disagree
- with this usage or haven't thought much about it. My experience is
- that communication is enhanced when the use of percent is restricted
- to numbers describing parts of some whole.
-
- >>The use of percent in relative comparisons naturally leads to subtle
- >>misunderstandings. Thus its best to say something like "machine A
- >>(at 20 M op/sec) is four times as fast as machine B (at 5 M op/sec)."
- >
- > I agree that is better to say. But I think the problem is that there
- > are differences in the understandings of the semantics of the WORDS
- > (i.e. we all work the formulas the same way, but just come up with
- > different fomulas).
- >
- > (5 M op/sec vs 4 M op/sec)
- > "machine A is 20% slower than machine B"
- > "machine A is 80% of the speed of machine B"
- >
- > Wording makes a difference.
-
- Agreed.
-
- BTW, this is getting pretty far from comp.programming territory,
- so I'll let this be my last comment on the subject.
- --
- Norman Graham
- <norman@a.cs.okstate.edu> Standard Disclaimer Applies
-