I Multiple R² Measures the Proportion of Explained Variation

question 109

Multiple Choice

i. Multiple R² measures the proportion of explained variation. ii. 90% of total variation in the dependent variable is explained by the independent variable for a multiple R² = 0.90.
iii. The multiple standard error of estimate measures the variation about the regression plane when two independent variables are considered.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

ECT

Electroconvulsive Therapy, a psychiatric treatment method where seizures are electrically induced in patients to provide relief from mental disorders.

Seizure

A sudden, uncontrolled electrical disturbance in the brain that can cause changes in behavior, movements, feelings, and levels of consciousness.

Blackout

A temporary loss of consciousness or memory, often as a result of alcohol consumption or medical conditions.

Hindbrain

The rear part of the brain that includes the cerebellum, pons, and medulla oblongata, responsible for regulating basic life functions.