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# Graphing

## by Science Café, Science Teacher at Bishops Diocesan College on May 10, 2010

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A set of slides created to teach Graphing to learners at Bishops Diocesan College in Cape Town.

A set of slides created to teach Graphing to learners at Bishops Diocesan College in Cape Town.

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## GraphingPresentation Transcript

• Graphing Gives the viewer the ability to see trends and analyze data in a different way than simply looking at numbers.
• The Important Elements of a Graph
• Every Graph has “TAILS”
• T itle - goal of graph and what it measures.
• A xis – x -axis and y -axis.
• I ncrements – numbers along axis
• L abels – x - and y -axis must be labeled.
• S cale – scale of the numbers is important to accurately interpret the graph.
• The x -axis and y -axis
• D ependent variable is the
• R esponding variable, graphed on the
• Y -Axis, which is vertical.
• M anipulated variable is the
• I ndependent variable, graphed on the
• X -Axis, which is horizontal.
• D ependent
• R esponding
• Y -Axis
• M anipulated I ndependent X -Axis
The x -axis and y -axis
• TYPES OF GRAPHS
• LINE GRAPH
• BAR GRAPH
• PIE CHART
• SCATTER PLOT
• Line Graph
• Use in evaluating trends.
• The most common type of graph.
• Points connected by a line to make a visual pattern over time.
• Bar Graph
• Use in comparing information across individuals, settings, or situations.
• Information collected by counting.
• Can be useful when the X-axis uses non-consecutive data points.
• Pie Chart
• Use in representing portions of a whole.
• Useful in representing percentages
• Scatter Plot
• Use when a variety of measurements are taken consecutively.
• Each point is independent.
• Can see how one point compares with others.
• Mini-Quiz
• In a line graph, the ______ variable is plotted on the vertical, y-axis.
• ____________ graphs are useful for showing information collected by counting.
• The slices of a pie graph usually are represented as _________ of the total.