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“EIGHT out of ten cats prefer new improved Katphood with nourishing vitafibres.”

How often have you seen a claim of this kind and wondered what it really meant? How many cats took part in the trials, for example? Was the sample big enough to give accurate results? Taken literally, the claim could mean that the trial of new Katphood involved ten cats and was eaten by eight of them. The manufacturer could have tested one hundred cats of which eighty showed a preference. What the manufacturer wants you to believe is that 80 per cent of all cats would prefer…

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