A Scatter Diagram Is Given with One of the Points

question 16

Multiple Choice

A scatter diagram is given with one of the points labeled ʺA.ʺ In addition, there are two least -squares regression lines
drawn. The solid line excludes the point A. The dashed line includes the point A. Based on the graph, is the point A
influential
-What effect will an influential observation have upon the graph of the least squares regression line

• A) It will pull the graph toward the observation.
• B) It will have no effect.
• C) It will push the graph away from the observation.
• D) It will lower the value of the correlation coefficient to make further analysis meaningless.

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Definitions:

Bipolar

Relating to or involving two completely opposites; in psychiatry, it refers to a mental disorder that causes extreme mood swings between depression and mania.

Sacral Nerves

A set of nerves that emerge from the sacral part of the spinal cord, playing key roles in the motor and sensory functions of the lower back, pelvis, and legs.

Lumbar Plexus

A network of nerve fibers in the lumbar region of the body, responsible for motor and sensory functions of the lower limbs.

Meninges

The three protective membranes (dura mater, arachnoid mater, and pia mater) that cover the brain and spinal cord.