Determine Whether a Linear or Quadratic Function Would Be a More

question 58

Multiple Choice

Determine whether a linear or quadratic function would be a more appropriate model for the graphed data. If linear, tell whether the slope should be positive or negative. If quadratic, decide whether the coefficient of $x ^ { 2 }$ should be positive or negative. $\text {DENTAL FLOSS USE}$

$\text {Years since 2000}$

• A) Quadratic; positive
• B) Quadratic; negative
• C) Linear; negative
• D) Linear; positive

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Definitions:

Research Hypothesis

A specific, testable prediction about the expected outcome of a study.

Probability

A measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Samples

Subsets of a population selected for measurement, observation, or questioning to make statistical inferences about the whole population.

Populations

In statistics, the entire pool from which a statistical sample is drawn and to which conclusions or inferences are made based on the sample.