is an extreme value that stand out greatly from the overall pattern of values in a dataset. In other words, it's a piece of data that is an abnormal distance from other points.

refers to a distortion or asymmetry that deviates from the symmetrical bell curve, or normal distribution, in a data set.

divides a given data into two equal parts.

divides a given data into for equal parts.

is a simple way for representing statistical data on a plot in which a rectangle is drawn to represent the second and third quartiles, usually with a vertical line inside to indicate the median value. The lower and upper quartiles are shown as horizontal lines either side of the rectangle.

is the difference betwenn the first quartile and the third quartile.