10. The method of claim 9 , further comprising: displaying a minimum fill percentage for the GUI, wherein the minimum fill percentage corresponds to a percentage of known values within the tabular dataset from a sum of all null values and all known values for the tabular dataset.
10. The method of claim 9 , further comprising: displaying a minimum fill percentage for the GUI, wherein the minimum fill percentage corresponds to a percentage of known values within the tabular dataset from a sum of all null values and all known values for the tabular dataset. 11. The method of claim 10 , wherein the slider interface controllable by the user to specify the acceptable degree of uncertainty for the spreadsheet or table is restricted to a range encompassing the minimum fill percentage and a maximum degree of uncertainty necessary to completely populate the displayed tabular dataset.