first quartile
11Quantile — Quantiles are points taken at regular intervals from the cumulative distribution function of a random variable. Dividing ordered data into q essentially equal sized data subsets is the motivation for q quantiles; the quantiles are the data values …
12Seven-number summary — In descriptive statistics, the seven number summary is a collection of seven summary statistics, and is a modification or extension of the five number summary. There are two common forms.(Parametric) Seven number summaryThe following numbers are… …
13Percentile — A percentile is the value of a variable below which a certain percent of observations fall. So the 20th percentile is the value (or score) below which 20 percent of the observations may be found. The term percentile and the related term… …
14statistics — /steuh tis tiks/, n. 1. (used with a sing. v.) the science that deals with the collection, classification, analysis, and interpretation of numerical facts or data, and that, by use of mathematical theories of probability, imposes order and… …
15Interquartile range — In descriptive statistics, the interquartile range (IQR), also called the midspread, middle fifty and middle of the #s, is a measure of statistical dispersion, being equal to the difference between the third and first quartiles.Unlike the (total) …
16Five-number summary — In descriptive statistics, the five number summary of a data set consists of:# the minimum (smallest observation) # the lower quartile or first quartile (which cuts off the lowest 25% of the data) # the median (middle value) # the upper quartile… …
17Exponential distribution — Not to be confused with the exponential families of probability distributions. Exponential Probability density function Cumulative distribution function para …
18WorleyParsons — Infobox Company company name = WorleyParsons Limited company company type = Public asx|WOR company slogan = When experience counts foundation = 1987, but dating back to 1971 location = Perth, Australia key people = Mr Ron McNeilly (Chairman, Non… …
19Quantile function — See also quantile. In probability theory, a quantile function of a probability distribution is the inverse F −1 of its cumulative distribution function (cdf) F . Assuming a continuous and strictly monotonic distribution function, scriptstyle… …
20Quintiles — A statistical value of a data set that represents 20% of a given population. The first quartile represents the lowest fifth of the data (1 20%); the second quartile represents the second fifth (21% 40%) etc. Quintiles are often used to create cut …
