How is the SNAP score and percentile calculated?

Hi, This is how percentile is calculated: The kth percentile is a value in a data set that splits the data into two pieces: The lower piece contains k percent of the data, and the upper piece contains the rest of the data (which amounts to [100 k] percent, because the total amount of data is 100%). Note: k is any number between 0 and 100. To calculate the kth percentile (where k is any number between zero and one hundred), do the following steps: A- Order all the values in the data set from smallest to largest. B- Multiply k percent by the total number of values, n. This number is called the index. C- If the index obtained in Step 2 is not a whole number, round it up to the nearest whole number and go to Step 4a. If the index obtained in Step 2 is a whole number, go to Step 4b. D- Count the values in your data set from left to right (from the smallest to the largest value) until you reach the number indicated by Step 3. The corresponding value in your data set is the kth percentile. E- Count the values in your data set from left to right until you reach the number indicated by Step 2. The kth percentile is the average of that corresponding value in your data set and the value that directly follows it.

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Hi, There are two scores. First, the SNAP score out of 180 which is scaled down to 40. For example, if my score is 90 out of 180, my scaled score will be 20 {(90/180) * 40 = 20}. This is called SNAP score. And SNAP has given this in terms of percentile.

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