difference between the current duration and avg duration

[splunkpoornima]

hi

i have one table with different task and its duration as,

TaskAction duration

task1 12.2

task 2 1.90

task1 2.22

using the stats command i found the average duration for the each task ,i want to append those average to the above table as ..
my result sholud be

Taskaction duration avg(duration)

task1 12.2 16

task2 1.90 2.97

task1 2.22 16

[Ayn]

... | eventstats avg(duration) as avgdur by Taskaction | table Taskaction duration avgdur