## stat 19

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Association.

Two variables are associated if variation in one variable has effect on variation in other variables.

Correlation.

It is a measure of association between variables.

Scatter Diagram or Scatter Plot

It is graph obtained by plotting of values of two variables which describe single bivariate observation (e.g. height and weight of a person). One variable (independent variable) X coordinate and the other variable (dependent variable) as Y coordinate.

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