I did several tests in a sample of 90 individuals to check some behaviors. I got the following results:

10% of my sample has the behavior A 65% of my sample has the behavior B 80% of my sample has the behavior C

Now I want to know what is the percentage of individuals that behave like A or B or C. Is there any way to find out the answer or is that impossible?



It's impossible if you have no information about the correlation of A B and C between each other.

Imagine the case every person with behavior A has also behavior B, and everyone with behavior B has behavior C. Then exactly 80% of people have behaviors A B or C.

An other case would be if every person can either have behavior A or B but not both. Then at least 90% of the people have behavior A B or C.

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  • 1
    $\begingroup$ Nice explanation. Thank you very much. $\endgroup$ – Guilherme Noronha Aug 3 '18 at 1:19

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