Final answer:
Applying a filter to show the bottom value in a data field will display the entry with the lowest value for that field, such as identifying the lowest frequency in a dataset relating to air column depths.
Step-by-step explanation:
When you apply a filter to show the one field with the bottom value in a dataset, it will display the entry that has the lowest value for that specific field. For example, if you have a dataset tracking the frequency of sound waves at various depths of an air column and you apply a filter to find the bottom frequency value, the data will display the entry with the lowest frequency. This assumes that, as the depth of the air column increases, frequency values decrease, in line with the relationship between depth and frequency where the deeper the column, the lower the frequency.