Based on the round-trip airfare table, the frequency and cumulative frequency, and the number of airfares, the percentile rank of $1,133 can be found to be 37.5%.
What percentile rank is $1,133?
The percentile of $1,133 can be found by the formula:
= (Number of air fares below $1,133) / Total number of air fares x 100
From the cumulative frequency column, we can tell that the number of air fares below $1,133 is 30 and that the total number of air fares is 80.
The percentile of $1,133 is therefore:
= 30 / 80 x 100
= 37.5%
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