Re: Hidden information question

Schizoid Man <schiz@xxxxxx> wrote:
Several coworkers would like to know their average salary. How can they
calculate it, without disclosing their own salaries?

One person enters a random number on a calculator and add his salary to it.
They pass the calculator around, each person adding his salary. The first
person substracts the original random number and does the average.


How does one calculate the mean for a set of random variables, if one
does not know:
1. the value of the variables, or
2. the parameters (i.e. mean, std dev) of the distribution?

One doesn't. A plurality working in combination can.

Xho

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Relevant Pages

  • Hidden information question
    ... Several coworkers would like to know their average salary. ... without disclosing their own salaries? ... How does one calculate the mean for a set of random variables, ...
    (sci.stat.math)
  • Re: Hidden information question
    ... without disclosing their own salaries? ... They pass the calculator around, ... person substracts the original random number and does the average. ...
    (sci.stat.math)
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