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Data Items Prepared Remove Factors Vary Make Comparison

Data items are prepared in a specific way to remove factors that can vary between them, as this would affect the validity of the comparison.

I dati vengono preparati in un modo specifico per rimuovere i fattori che possono variare tra loro, poiché ciò influirebbe sulla validità del confronto.

Front Why are data items prepared in a certain way?
Back - to remove factors that can vary between them
- as it could make the comparison invalid

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