Percentile is a score below which a given percentage of scores falls. Percentiles are expressed in same unit as input scores. No standard definition exists, but similar results for large samples. 25th percentile (Q1), 50th percentile (Q2), 75th percentile (Q3) are common quartiles
Percentiles indicate the percentage of population values below a given value. Percentiles range from 1st to 100th, with 100th being the largest value. Decimal percentiles like 0.13th and 2.28th are possible
Z score table shows percentage of values below a specific z score. Used to represent standard normal distribution probability distribution. Common practice is converting normal distributions to standard normal
Percentile shows percentage of scores below a given number. Used in competitive exams like SAT and LSAT. Different from percentage, which considers fractions as one term
Data calculated using NORMDIST function in Excel. Rarity values vary in decimal places for better understanding
Percentile shows where certain percentage of scores fall below given number. Percentile divides data set into 100 equal parts. Used to understand test scores and health indicators