Given the Least Squares Regression Line $\hat { y } = 2.48 - 1.63 x$

question 221

Multiple Choice

Given the least squares regression line $\hat { y } = 2.48 - 1.63 x$ ,and a coefficient of determination of 0.81,the coefficient of correlation is:

• A) -0.66
• B) 0.81
• C) -0.90
• D) 0.90

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Definitions:

Foreskin

The fold of skin covering the head of the penis, which can be removed by circumcision for cultural, religious, or health reasons.

Perineal Care

The practice of cleaning and caring for the perineum, the region between the anus and the genitals, to prevent infection and maintain hygiene.

Pediculosis Capitis

A common parasitic infestation of the scalp caused by head lice, leading to itching and discomfort.

Lindane

A chemical used in medications and insecticides, previously common in treatments for lice and scabies, now restricted due to health risks.