1. The Rule of T.H.U.M.B. for making a Data Table! T  Title (Comparing Your D.V & I.V.) H  Headings (I.V. Column 1 st, D.V. 2 nd, Avg. @ End!) U  Units (Where they Apply!) M  Makes Data Organized! B  Borders or Boxes (Around your Data!) *I.V. = Independent Variable & D.V. = Dependent Variable

2. Independent VariableDependent Variable (Units) Example 1: “ Title – Comparing D.V. to I.V. ” * If I wanted to see how fertilizer affected the growth of a plant and I gathered the following data: A plant was given no fertilizer and grew 5 cm, Another was given 1 gram of fertilizer and grew 7 cm, and the last was given 2 grams of fertilizer and grew 10 cm. I could then organize that data accordingly into a table! Title = Plant Growth (cm) vs. The Amount of Fertilizer Received Amount of Fertilizer Received (Grams = g) Plant Growth (Centimeters = cm) No Fertilizer5 cm 1 gram7 cm 2 grams10 cm

3. Independent Variable Dependent Variable (Units) Average (Units) Trial 1Trial 2Trial 3 Example 2: “ Title – Comparing D.V. to I.V. ” * An experiment tested three different insects (spider, ant & beetle) to see which one ran a certain distance (3 meters) the quickest. Each insect was given 3 chances (trials); here was the data collected: Spider  Trial 1 = 12 seconds, T 2 = 11 sec, and T 3 = 10 sec. Ant  Trial 1 = 22 sec, T2 = 23 sec, and T 3 = 21 sec. The Beetle  T1 = 7 sec, T2 = 6 sec, T3 = 5 sec. Organize the Data in a Table according to T.H.U.M.B. ! Title = Time in Seconds vs. Different Insects Different Insects Time in (Seconds = sec) Average (sec) Trial 1Trial 2Trial 3 Spider12 sec11 sec10 sec11 sec Ant22 sec23 sec21 sec22 sec Beetle7 sec6 sec5 sec6 sec

4. YOUR TURN: I collected the following data: Student 1 received an 80% on their Biology test, Student 2 = 85%, Student 3 = 75% and Student 4 = 98%. *Create your table using THUMB below: StudentsPercentage on Biology Test (%) Student 180% Student 285% Student 375% Student 498% Biology Test Percentage vs. Students Tested

5. A little Tougher Now: 4 kids (2 boys and 2 girls), were tested to see how long it took to clean their rooms each day for 3 consecutive days; the data is as follows: Shelly took 1 hour on day 1, 45 minutes on day 2 and 1 hour 10 minutes on day 3. Tom took 45 minutes on day 1, 2 hours on day 2 and 1 hour 30 minutes on day 3. Rich took 2 hours on day 1, 3 hours on day 2 and 2 hours on day 3. Jenny took 30 minutes on day 1, 35 minutes on day 2, and 40 minutes on day 3. Averages time take to clean the room was: Shelly = *Create your table using THUMB below: KidsHow Fast They Cleaned Their Rooms Each Day (Hours = hr & Minutes = min) Average Time Taken Day 1Day 2Day 3 Shelly1 hr45 min1 hr 10 min58 min Tom45 min2 hrs1 hr 30 min1 hr 25 min Rich2 hrs3 hrs2 hrs2 hrs 20 min Jenny30 min35 min40 min35 min Time it Took to Clean Their Room Each Day vs Kids