I don’t even know if the question is well written but this is my doubt: sometimes (in the area of medicine in my case) you can read numbers like “between 30 and 80 percent of the patients have a relapse”.
Isn’t a percentage an average per se?
If I do an experiment with 100 people, shouldn’t I have an exact percentage of people who react in certain way? How can’t I know if they are 30 or 80?
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If you collect apples one year and you get 50 then the next year you get 70 then the amount of apples you get per year is between 50 to 70.
Now the same applies to percentages, if in one test 50% of people get sick and then in another 70% get sick the percentage range is 50-70%.
Obviously people would have more than just two tests but the idea is the same.
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