146 Biodex Medical Systems, Inc. © 2017
Figure C.15. Data Point Calculation.
4. To find the Sway Index value, enter the following formula taking the sum of all the data
points on each row from 43 to 850 and placing it into cell E:
=((A43-$C$850/807)*(A43-$C$850/807))+((B43-$D$850/807)*(B43-$D$850/807))
Figure C.16. Sway Index Value for Condition 1, Trial 1
5. Repeat step 4 to determine the Sway Index value for each row from 851 to 1659:
=((A851-$C$1659/807)*(A851-$C$1659/807))+((B851-$D$1659/807)*(B851-
$D$1659/807))