Sums

OK, we have our count of the observations (n=12).

13        36        98        77        42        50       
110      22        49        81        26        38

Now we can also do a sum of the observations. Once again, we’re using very simple math here. Just add up all the numbers above (you can use a calculator if you prefer).

Sum = 13+36+98+77+42+50+110+22+49+81+26+38

The answer is 642. Should this number mean anything to you right now? Not really. It’s good to have, but it will only become useful later on as we use it in other statistical analyses. For now, just give yourself a pat on the back for successfully completing a count and a sum:

Measures of Center >>

rev. 15-Jul-2006