The problem goes:
Given the following table bellow:
\begin{array}{|l|c|c|c|c|c|c|c|c|c|c|} \hline \textbf{Data} & -10 & 25 & 37 & 40 & 43 & 54 & 111 & 113 & 146 & 168 \\ \hline \textbf{Frequency} & 3 & 6 & 1 & 5 & 3 & 2 & 7 & 5 & 3 & 4 \\ \hline \end{array}
Using the data from the table above, find the percentile rank for the $54$.
I know percentile rank is #below the total #. Which, in this case is $18$ over $39$ which will equal to $46$ percentile ( I know this because the answer and how to solve the problem was giving to me as a practice test) but my question is where did that $18$ over $39$ comes from? How do I get those number?
You have $18$ from $39$ results less than $54$, so the percentile is $\frac{18}{39}$ . It is equal to the ratio of outcomes below $54$.