Mark an appropriate scale on each labeled axis. Diagrams, tables, and graphs are used by scientists mainly to Base your answer(s) to the following question(s) on the information below and on your knowledge of biology. A student squeezes and releases a clothespin as often as possible for 2 minutes and then takes his pulse for 20 seconds. After a 2-minute rest, he repeats the procedure. This pattern is repeated one more time. The student's 20-second pulse counts mere 23, 26, and 21. Complete the "Pulse/Min" column in the data table below for all three trials as well as the average pulse rate per minute.