I have to find $80\%$, $60\%$, $40\%$, $20\%$ and it's values of a range of scores.
For one range, my values go from $2$ to $8$ (mean will be $5$ which means, $50\%$ of that range's value = $5$)
For second range, my values go from $3$ to $15$ (mean will be $9$ which means, $50\%$ of that range's value = $9$)
How do I come up with some formula to find $\%$ and values at $80\%$, $60\%$, $40\%$, $20\%$ and make it dynamic (I can plug in any range and it would give me values at those $\%$)
Thank you