Well, this is just an idea. Take 10 readings, then obtain the average, and display it in the LCD. Something like this,

Code:
MAIN:

FOR I = 0 TO 9
  ....Take ADC reading READING[I] 
NEXT I

'Next obtain the average
AVERAGE = (READING[0] + READING[1] + ......) / 10

LCDOUT $FE, 1, DEC AVERAGE

GOTO MAIN
Robert