Elaine Wants to Get to Her Classes, Work, and Church

Short Answer

Elaine wants to get to her classes, work, and church on time, so she keeps a tally sheet in her car with two columns labeled "On time" and "Late," and she puts a mark in each column to count the number of times she is on time and the number of times she is late. Elaine is keeping track of the frequency of her responses through __________.