Quartile
quartile
quartile- one of the values of a variable that divides the distribution of the variable into four groups having equal frequencies.
quartile
A tertile or tercile.
A quartile divides a distribution into four equal parts, each containing 25% of the data. The first quartile (Q1) represents the value below which 25% of the data fall, the second quartile (Q2) is the median, and the third quartile (Q3) is the value below which 75% of the data fall.
Jack divides his groups into two.
In statistics, a quartile is each of four equal groups into which a population can be divided according to the distribution of values of a particular variable.
The variable that the experimenter deliberately changes across groups is the independent variable. This variable is manipulated to observe the effect it has on another variable, known as the dependent variable.
Distribution
controlled parameters the factor that stays the same in ALL groups variable parameters the factor(s) that change between control groups and variable groups
Use Universal distribution groups in a multiple-domain environment. The membership of universal distribution groups is replicated to each global catalog server in each domain
The variable being tested. The difference between the two groups after the experiment will ideally show some effect by the variable element.