The percentile rank of a particular score is defined as the percentage of the scores in a distribution which are at or below the particular score. It is possible to determine some percentile ranks directly from the frequency distribution table, provided that the percentile ranks are percentages that appear in the table.hen a score is identified by its percentile rank, the score is called a percentile. It is also possible to determine some percentiles directly from the frequency distribution table, provided that the percentiles are upper real limits of a category.
To divide a decimal by a whole number, divide as you would for whole numbers; and place a decimal point in the answer so that it lines up with the decimal point in the dividend.
Here are the rules for multiplying decimal numbers: 1  Multiply the numbers just as if they were whole numbers: 2  Line up the numbers on the right--do not align the decimal points. 3  Starting on the right, multiply each digit in the top number by each digit in the bottom number, just as with whole numbers.  Add the products.