A Recent Study Was Done to Assess Factors That Put

question 13

Multiple Choice

A recent study was done to assess factors that put Hispanic populations more at risk for obesity and related chronic diseases,such as diabetes and heart disease,than non-Hispanic populations.Data were collected on several factors,such as the crude morality rate of Hispanics,obesity prevalence,percent of adults diagnosed with diabetes,and median income at the state level.Pearson's Correlations were used to examine the strength of the relationship between obesity and the other variables,as a way of observing which characteristics were associated with high prevalence of obesity.In addition,a simple linear regression was used to model the relationship between diabetes and obesity.The results from SPSS are shown below. What is the sample correlation between obesity prevalence and percent adults diagnosed with diabetes?

• A)-.240
• B).141
• C)1
• D)None of the above

---

Definitions:

Axon Diameter

The thickness of the axon, which influences the speed of nerve impulse conduction.

Action Potential Speed

The rate at which an action potential, or a short-lasting event of electrical charge reversal in a neuron, travels along a nerve fiber.

Saltatory Conduction

The process by which nerve impulses jump between the nodes of Ranvier in myelinated neurons, speeding up signal transmission.

Node of Ranvier

Gaps in the myelin sheath of nerve fibers where the axonal membrane is exposed to the extracellular space, facilitating rapid signal transmission.