Table 151
Use These Data to Answer the Following Question

question 42

Multiple Choice

Table 15.1
Use these data to answer the following question:
$\begin{array}{lll} \underline{\text { Bacteria}} & \underline{\text { Portal of entry }} & \underline{\mathrm{ID} 50} \\ \text { Staphylococcus aureus } & \text { Wound } & <10 \\ \text { S. aureus } & \text { Wound }+ \text { ampicillin } & 300\end{array}$
-The administration of ampicillin before surgery

• A) Replaces tetracycline.
• B) Increases the risk of staphylococcal infection.
• C) Decreases the risk of staphylococcal infection.
• D) Has no effect on risk of infection.
• E) Can't tell.

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Definitions:

Coefficients

Numbers or parameters in a mathematical equation that multiply variables, often used to describe the relationship between variables in statistical models.

Probability Distribution

A math function tasked with computing the odds of different potential outcomes during an experiment.

Multiple Regression Model

A statistical technique that uses several explanatory variables to predict the outcome of a response variable.

Degrees of Freedom

Degrees of freedom refer to the number of independent values or quantities which can be assigned to a statistical distribution or to a system without violating any constraint.