The present disclosure includes apparatuses and methods to change data category values. An example is a memory device that includes an array having a plurality of sequences of memory cells, where each of the respective sequences of memory cells includes a plurality of designated subsets of memory cells, and the array includes a counter corresponding to one of the plurality of designated subsets of memory cells. The memory device is configured to receive input corresponding to a data batch, where the input includes a designation that corresponds to the one of the plurality of designated subsets of memory cells to be conditionally updated, and to change a numerical value stored by the counter corresponding to the one of the plurality of designated subsets of memory cells.