how to explain correlation graph

Use the correlation matrix to assess the strength and direction of the relationship between two variables. This add-in is available in all versions of Excel through Excel , but is not enabled by default. Variables that tend to go up or down together have high positive correlation coefficients. Instead of performing an experiment , researchers may collect data to look at possible relationships between variables. Illusory Correlations. In a scatter correlation diagram, if all the points stretch in one line, then the correlation is perfect and is in unity. Use your specialized knowledge to determine whether the difference is practically significant.

HOW TO EXPLAIN CORRELATION GRAPH / janiceclark.net

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