quartilesthe three points on the scale of

Question

QUARTILES

The three points on the scale  of observation ( or  values  of the variable) which  divide  the total  frequency  into four  equal  parts are called  quartiles for the  data arranged in ascending or descending  order of magnitude.

When  the data  are in  ascending order then first point  is called first quartile and is denoted by Q the  second  point is called  second quartile and is denoted by Q₂ which  is equivalent to median and the  third  points is  called  third  quartile and is denoted by Q₃.