An R² of 0

question 3

True/False

An R² of 0.70 mean 30% of the variability in the dependent variable was explained by the independent variable.

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Definitions:

Cross-Sectional

A research design that analyzes data from a population, or a representative subset, at a specific point in time.

Concrete Operations

A stage in Piaget's theory of cognitive development, typically occurring between ages 7 and 11, where children gain the ability to think logically about concrete events.

Formal Operations

The final stage in Piaget's theory of cognitive development, characterized by the ability to think abstractly, reason logically, and manage ideas in the mind without concrete manipulation.

Sensory-Motor

Referring to the processing of sensory information and motor response.