mapping multiple values to get single value

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$0.8,0.9,0.7,0.4,0.2,0.1 \Rightarrow x$

I want to map all values to $x$, such that $x$ can represent all values. One way I can think of is mean. But, it won't be useful if variance is high.

eg. $0.9,0.9,0.8,0.7,0.1,0.1,0.2 = mean$ is $0.52$

So, it doesn't represent all values in a bin.

is there any other way to get $x$?