In regression analysis, the variable that is being predicted is thea.response, or dependent, variableb.independent variablec.intervening variabled.is usually x

In regression analysis, the variable that is being predicted is the dependent variable. Here's a breakdown of the options:

1. Response or Dependent Variable: This is the variable that you aim to predict or explain. It is dependent on the changes in the independent variable(s).

2. Independent Variable: This variable is used to predict or explain the dependent variable. It is not influenced by other variables in the analysis.

3. Intervening Variable: This variable may mediate the relationship between the independent and dependent variables but is not the main focus in a standard regression analysis.

4. Is Usually x: This is not correct; the dependent variable is often represented as $y$ in equations, while the independent variables are labeled $x$.

Final Answer

The correct answer is a. response, or dependent variable.