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Published byAnn Watson Modified over 4 years ago

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**How do scientists show the results of investigations?**

Representing Data How do scientists show the results of investigations?

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**How Scientists make sense of data?**

Organize the data through data tables Data tables have two columns One column – independent variable the other column dependent variable

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**Scientists Graph and Analyze Data**

Type of graph depends on their data Scatter plot- a graph with points plotted to show a possible relationship between two sets of data A scatter plot has a horizontal x-axis and a vertical y-axis X-axis = independent variable Y-axis= dependent variable

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Scattered Plot Graph Line of best fit

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Bar Graph Displays and compares data in separate categories.

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Circle Graphs A circle graph is used when you are showing how each group of data relates to all of the data.

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**Patterns shown in graphs**

A pattern or trend shows the relationship between the two variables in the experiment. Graphs show if variables are increasing, decreasing or staying the same.

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**Linear Relationships A line can show the trend of data on a graph**

Linear graph is a graph which the independent and dependent variable can be shown with a straight line. A straight line show the rate of change of the dependent variable with respect to the independent variable. Y always increases or decreases by the same value in relation to x.

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Linear graph What value does the y-axis (dependent variable) decrease by in relation to the x-axis? (independent variable)

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**Nonlinear relationships**

The relationship between the independent and dependent variables are in a curve. The relationship between the variables cannot be shown with a straight line.

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Graphs Graphs allow scientist to determine the relationship between variables. Direct relationship, the value of one variable increases as the value of the other variable increases.

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Graphs Inverse relationship the value of one variable decreases as the other increases. Downward sloping line

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