Graphing Graphing When performing an experiment a scientist

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Graphing!

Graphing!

Graphing When performing an experiment, a scientist must be able to record data and

Graphing When performing an experiment, a scientist must be able to record data and process that data into useful information.

- To process data, we put it into charts or tables. - Then, the

- To process data, we put it into charts or tables. - Then, the data must be graphed so that it can be interpreted. Graphs are visual representations of data.

Part 1: Tables and Charts • Tables and charts are created for organizing data.

Part 1: Tables and Charts • Tables and charts are created for organizing data.

Part 2: Graphing Data Pie Graphs or Circle Graphs • Pie graphs are useful

Part 2: Graphing Data Pie Graphs or Circle Graphs • Pie graphs are useful in showing percentages or parts of a whole. • For example, how different categories are represented within a topic area. – Sample: How much land does Asia take up in the world?

Part 2: Graphing Data B) Bar Graphs • A bar graph is a way

Part 2: Graphing Data B) Bar Graphs • A bar graph is a way of showing relationships between items that being compared. • It contains an x and y axis. – These are 2 lines that meet at an right angle. • It uses columns to display data. – Example, how does the number of farms in 1910 compare with 1990? • Notice: – The x and y axis should be labeled. – The graph has a title. – The bars are vertical. – The numbers on the Y axis are in sequence for an accurate

Part 2: Graphing Data C) Line Graphs • A line graph shows the best

Part 2: Graphing Data C) Line Graphs • A line graph shows the best relationship between 2 variables. • Change over time is always shown with a line graph. • Along the x-axis (horizontal) is the independent variable. • Along the y-axis (vertical) is the dependent variable.

Constructing a graph • Dependent Variable goes on the Y axis. • Independent Variable

Constructing a graph • Dependent Variable goes on the Y axis. • Independent Variable goes on the X axis • Pace numbers evenly (Count by 1’s, 2’s, 5’s or 10’s along the whole axis) • Label the axes. • Give your graph a title.