How do you establish baseline data when creating a graph for progress monitoring? Administer three probes or trials, and then mark the lowest score by placing a dot on the vertical axis (e.g., words correct per minute). Administer three probes or trials, select the median (the middle number), and then mark the score by placing a dot on the vertical axis (e.g., words correct per minute). Administer one probe or trial, and then mark the score by placing a dot on the vertical axis (e.g., words correct per minute). Administer two probes or trials, and then mark the highest score by placing a dot on the vertical axis (e.g., words correct per minute)