Scatter Graph

A scatter plot (aka scatter chart, scatter graph) uses dots to represent values for two different numeric variables. The position of each dot on the horizontal and vertical axis indicates values for an individual data point. Scatter plots are used to observe relationships between variables.

They must contain:

Title, variables, scales, data, etc

A hypothesis is an idea or explanation that you then test through study and experimentation.

The scatter graph either support or not support the hypothesis.

3 type of correlation

Positive Correlation

Strongly Positive

Moderate Positive

Weak Positive

Negative Correlation

Strongly Negative

Mid Negative

Weakly Positive

No correlation

Just points on the graph with no pattern

Example of Scatter Graph:

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Line of Best Fit: A linear or smooth curved line which goes through the graph.

#The number of data must be equal in both sides. Never should one be more than another.

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Rules of Scatter Graphs:

Pencils and Rulers

Variables

Line of best fit must be linear or smoothly curved

Have scales

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