GRAPHING

Materials Ruler Spiral: Title and Date Graph paper with 4, quarter-paper sized graphs Pencil

Y axis X axis

IV vs. DV Independent variable (IV): Manipulated variable Ex: speed Dependent variable (DV) : Relies on the manipulated variable Ex: time

DRY MIX Dependent variable Relies on manipulated Y axis Manipulated variable Independent variable X axis

Title SCALE: evenly distributed DV vs. IV DV LABELS IV DV (with units) 70 DV vs. IV 60 50 DV (with units) 40 SCALE: evenly distributed LABELS 30 20 10 IV 1st 2nd 3rd IV (with units)

TYPES OF GRAPHS Scatter plot: we use this 95% of the time (best fit line) Line graph: shows changes over time or space Bar graph: compares different variables Pie graph: useful with percentages

Speed of A Car 1 2 3 4 5 6 8 9 10 TIME (s) DISTANCE (m)

50 100 150 200 250 11 15 22 32 37 48 Volume vs. Temp. TEMP ( O C) 50 100 150 200 250 11 15 22 32 37 48 TEMP ( O C) VOLUME (mL)

144 162 176 192 206 20 40 60 80 100 KI SOLUBILITY GRAMS DISSOLVED TEMP ( O C)

O Si Al Fe Ca Mg Na K Other 45.2 27.2 8.2 5.8 5.1 2.8 2.3 1.7 Elements Abundance of Elements in the Lithosphere O Si Al Fe Ca Mg Na K Other 45.2 27.2 8.2 5.8 5.1 2.8 2.3 1.7 Elements %

Interpolate vs. Extrapolate Interpolate: being able to “construct” data points from inside a known data set Extrapolate: being able to “construct” data points from outside a known data set (predict)

Interpolate: Distance at time 2.5 s = Extrapolate: Time at Distance 15 m = 5m 9 s X s 6 s = 15 m 10m X s = 0.6 15 m

Be sure to label IV and DV! Create the data table! For the next slides you will create a data table representing the given graph Be sure to label IV and DV!

Frozen Dessert Production Gallons (mil) Dessert Frozen Dessert Production Regular Low fat Nonfat Sherbet Frozen Yogurt 55 27 2 3 4

USE THE DATA AT THE RED DOTS Individual Water Use from 1983-2001 Water Use (Liters per person) Municipal Water Use Per Person from 1983-2001 Year 1983 1986 1989 1992 1995 1998 2001 662 680 700 637 625 L / person

Sources of Radiation Exposure Rn X-ray body cosmic rocks Nuclear medicine c.p. n.p. 59 10 9 8 7 4 3 <0.1 sources %