'One out of seven' vs 'one in five' :)

[Tamara]

Hi

Could you explain the difference among:
'one out of five' and 'one in five'? (…and, possibly, with just 'one of five' …)
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[Alan]

Hi Tamara,

Both really have the same meaning. I would have a preference for the 'one in five' form. 'One out of five' is by its choice of prepositions more selective in its significance but turning the two forms over in my mind, I find there's is little difference discernible between the two. 'One of five' is simply descriptive as in: Charlie is one of five brothers in the family

A
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[Tamara]

Hi Alan

Thanks. Clear.

For no reason I myself prefer to use 'out of' in formal speaking (like the recent case with presentation of statistical data).
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It’s impossible to learn swimming without entering the water…