Complete the following statements. In general, 8 0% of the values in a data set lie at or below the 8th percentile. 18 x% of the values in a data set lie at or above the 18th percentile.. If a sample consists of 700 test scores, 252 percentile. If a sample consists of 700 test scores, 448 of them would be at or below the 36th x of them would be at or above the 88th percentile.