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### 5 Cards in this Set

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 Examine scatterplot of bivariate data If relationship exists then we look for Direction,Form,Strength. Direction Positive: If X increases as Y increases Negative: If X increases and Y decreases ot vice versa. Form Linear: Straight line or not Non-linear: Curvature or Quadratic(u shaped) or cubic or exponenial(half u) Strenght of relationship Strong: concentrated around form Weak: points loosely scattered about form Adding a categorical variable The relation b/w the individual categorical variables is stronger than the cumulative analysis of all categorical variables together. e.g of hot dogs in CD.