deciles the nine points on the scale of

Question

DECILES

The nine points  on the scale of observations  ( or  values of the variable) which divide the total  frequency into ten  equal parts  are called deciles for the data arranged in ascending or descending  order  of magnitude. When data  are in ascending order  the first point is called  first  decile and is  denoted  by D₁  the  second  point  is called second  decile and is  denoted by D₂ and so  on the last  point is called  ninth  decile  and is  denoted by D₉.