Introduction to Fit Y by X

Examine Relationships between Two Variables

Use the Fit Y by X platform to analyze pairs of variables. You can do this using scatter plots, linear regression, ANOVA, multiple comparisons, logistic regression, contingency tables and much more. Specific analyses depend on the modeling types of the variables.

Figure 4.1 Fit Y by X Platforms 

Fit Y by X launches one of four platforms:

• The Bivariate platform analyzes the relationship between two continuous variables. See “Bivariate Analysis”.

• The Oneway platform analyzes how the distribution of a continuous Y variable differs across groups that are defined by a categorical X variable. See Oneway Analysis.

• The Contingency platform analyzes the distribution of a categorical response variable Y as conditioned by the values of a categorical X factor. See Contingency Analysis.

• The Logistic platform fits the probabilities for the levels of a categorical Y variable to a continuous X predictor. See Logistic Analysis.