COMPLETE WEDNESDAY BELL RINGER SILENTLY 1. WHAT ARE THE 3 COMPONENTS OF A HYPOTHESIS? 2.WHAT IS THE SECOND STEP OF THE SCIENTIFIC METHOD? LAB TOMORROW!!!! HOW TO CONSTRUCT A GRAPH 1. IDENTIFY VARIABLE 2. DETERMINE THE GRAPH SCALE 3. PLOT THE DATA POINTS 4. DRAW THE GRAPH 5. TITLE THE GRAPH Independent variable 1. IDENTIFY VARIABLES • Factor that is varied (changed, tested) in an experiment • Label along the x-axis Dependent variable • Factor that is measured in an experiment • Label along the y-axis 2. DETERMINE THE GRAPH SCALE a) DETERMINE THE (RANGE) NUMERIC VALUE OF DEPENDENT VARIABLE b) ESTABLISH A SCALE THAT BEST FITS THE RANGE OF THIS VARIABLE c) SPREAD THE GRAPH TO USE THE MOST AVAILABLE SPACE d) BE CONSISTENT THROUGHOUT THE AXIS SCALE 2. DETERMINE THE GRAPH SCALE What do we need to find before we can determine our graph scale? Study Time vs. Test Grades Study Time Test Grade 2 68 0 50 6 97 3 79 1 66 4 88 1 70 2 73 5 92 2.5 77 3. PLOT THE DATA POINTS (FOR LINE GRAPH) a)PLOT EACH DATA VALUE ON THE GRAPH b)IF MULTIPLE SETS OF DATA ARE BEING PLOTTED, USE DIFFERENT COLORS AND INCLUDE A KEY 4. & 5. DRAW THE GRAPH AND ADD TITLE Remember TAILS: T – title A – axis I – increments L – labels (independent and dependent with units) S – scale Study Time vs. Test Grades DETERMINE IF THERE’S A RELATIONSHIP IN THE VARIABLES Direct Indirect Constant LINE PLOT STEM AND LEAF HISTOGRAM BAR GRAPH LINE GRAPH PIE CHART PICTOGRAPH SCATTERPLOT