In 2007, the Centers for Disease Control Received Reports from Public

question 23

Multiple Choice

In 2007, the Centers for Disease Control received reports from public health authorities and ophthalmologists in 37 states and Puerto Rico identifying 221people with Acanthamoeba keratinitis. Which other infectious agent is this disease most closely related to in terms of phylogeny?

• A) Dictyostelium discoiduem
• B) Toxoplasma gondii
• C) Leishmania major
• D) Legionella pneumophila
• E) Giardia lamblia

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Definitions:

Response Variable

The outcome of interest in a study or experiment, which is affected by the explanatory variables.

R-Squared Value

A numerical value indicating how much of the variability in a dependent variable can be accounted for by an independent variable(s) within a regression analysis framework.

Observed Variation

The variance noticed in data due to different factors that distinguish one piece of data from another.

X1

Often used to denote the first variable or predictor variable in statistical models and equations.