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Why is it.....

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KARL | 00:46 Fri 06th Mar 2009 | Business & Finance
6 Answers
...that people insist on saying the interest rate at 0.5% is half of one percent. Is this to prevent confusion that it might be of one-hundred-and-twenty-one-seven-hundred-and-fifty-sixths (121/756)?
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Question Author
oops, should read ....'that it might be half of one-hundred-....'

Sorry
I think one per cent means one part per hundred, so 2% = two parts per hundred , etc.

Economists and mathematicians prefer to say 'half of one per cent' rather than 'a half percent' since the latter in effect means a 'half part per hundred' which could be confused I suppose with 50%.

But I don't know why we don't just say 0.5%, since that shouldn't lead to any confusion. After all, the bank of England could in theory choose to change rates by for example 0.3% and it would be a bit unwieldy to say 'three tenths of one percent'.

Anyway, a worringly large proportion of the poulation don't understand percentages and don't know what 0.5% means.



They should say "Half of one percentage point", half of one percent would have brought them down to 0.95!
Yes, RIGeezer, the common practice is to refer to percentage points in these cases.
In your last sentence I take it you meant 0.995% rather than 0.95.
Question Author
Now I understand - nobody understands. Half of one percent is 0.5% which is the same as half a percent (a percent being one percent being 1%). You see, one is one whether it is a kilo a stone or percent (yes, one hundreth of the whole). Half of one is a half is 0.5. If you reduce something by half a percent then it is 0.5% less than it was before - yes, if 1% has been reduced by 0.5% then strictly speaking it is 0.995% but the rate was reduced to half of what it was so reduced by 50%. It was reduced to half a percent, 0.5% (yes, which is half of one). However, when people tell me they have lost half a stone then I get seriously worried because half a stone is actually just a stone that is half the size of what it used to be. For what reason did they halve it and how did they come to lose one half - where is the other half for comparison purposes and where do you start looking for the lost half ......but that is another story.
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Just had a thought - why don't the same people say 3.5% is "three and a half of one percent" ?

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