The ____ Is at the Center of the Tree

question 20

Multiple Choice

The ____ is at the center of the tree.

• A) pith
• B) bark
• C) cambium
• D) phloem

---

Definitions:

Predictor Variables

Variables in a statistical model that are used to predict or explain changes in the response variable.

With Interaction

A term indicating that the effect of one variable on a response variable depends on the level of another variable.

Interaction Term

An interaction term in statistics is a variable created from the product of two or more variables to capture the effect of their interaction on a dependent variable.

Dependent Variable

A variable in an experiment that is affected by changes in the independent variable.