The Preoperational Stage Extends from Approximately

question 22

Multiple Choice

The preoperational stage extends from approximately

• A) age 1 to age 3.
• B) age 2 to age 4.
• C) age 2 to age 7.
• D) age 7 to age 11.

---

Definitions:

Adaptive Smoothing

A forecasting technique that adjusts the smoothing constant based on the accuracy of previous forecasts.

Dependent Variable

A variable in research or modeling that is affected by other variables, typically representing the outcome or effect in an experiment or study.

Independent Variable

A variable in an experiment or model that is manipulated or changed to observe its effect on a dependent variable, without being influenced by other variables in the experiment.

Regression Models

Statistical methods used to estimate the relationships among variables, often to predict a particular outcome.