Added by Linda Tschudin on August 27, 1999 at 10:59:49:
Average value = measured values added together then divided by how many values there are.
10.123+10.013+9.987/3= 10.041
Deviations= measured values subtracted from Average value.
10.041-10.123=0.082
10.041-10.013=0.028
10.041-9.987=0.054
Average deviation= deviation values added together and divided by number of deviations involved. Then, place a -+ along with that number to the right of the average value.
0.082+0.028+0.054/3=0.01
Average deviation= 10.041 -+0.01