GRAPHING A “PICTURE” OF THE RELATIONSHIP BETWEEN THE INDEPENDENT AND DEPENDENT VARIABLES.

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Presentation transcript:

GRAPHING A “PICTURE” OF THE RELATIONSHIP BETWEEN THE INDEPENDENT AND DEPENDENT VARIABLES

VARIABLES X – AXIS: INDEPENDENT Y – AXIS: DEPENDENT

TYPES OF GRAPHS BAR GRAPH

HISTOGRAM

PIE GRAPH/CHART

PICTOGRAM

SCATTERPLOT

LINE GRAPH

FOR A LINE GRAPH DO A SCATTERPLOT FIRST DRAW A BEST FIT LINE OR CURVE LOOK AT THE DATA AND DECIDE WHETHER THE DATA OVERALL IS IN A LINE OR A CURVE DON’T PLAY CONNECT THE DOTS

LINE GRAPH RELATIONSHIPS LINEAR (DIRECT) THE INDEPENDENT VARIABLE DOES THE SAME AS THE DEPENDENT VARIABLE EX: IF INDEPENDENT VARIABLE INCREASES BY 2 UNITS, SO WILL THE DEPENDENT VARIABLE

LINEAR

INVERSE (INDIRECT) THE INDEPENDENT VARIABLE DOES THE OPPOSITE OF THE DEPENDENT VARIABLE EX: AS THE INDEPENDENT VARIABLE INCREASES, THE DEPENDENT VARIABLE DECREASES

INVERSE

COMPONENTS NEEDED FOR A GRAPH AXIS SCALES (NUMBERS) EVENLY SPACED, BE SURE ALL DATA POINTS CAN FIT ON THE GRAPH AXIS LABELS (QUANTITY AND UNIT) EX: TIME (s) HEIGHT (cm) POINTS PLOTTED BEST FIT LINE OR CURVE TITLE (DEPENDENT vs. INDEPENDENT)