Conclusion:

The conductivity sensor used successfully determined the stoichiometric ratio of the silver nitrate and unknown substances reaction with each other.  The results yield that the stoichiometric ratio of the reaction is 3:1.  Since the minimum conductivity, 1060 (uS) was achieved at the 3:1 ratio, it is most likely that the Ag+ ions react with the Q^n- ions in the 3:1 ratio.  Possible sources of error present in the experiment resulting from error analysis would be human error most likely.  Using the pipet dropper was not precise enough when working to obtain the same final volumes in each solution present in each test tube.  Measurements could have easily been thrown off.  Also, failure to rinse the conductivity sensor thoroughly with deionized water before each new measurement taken in the test tubes could have altered the results.