The Results of a Quadratic Model Fit to Time Series $\hat{y}$

question 47

Multiple Choice

The results of a quadratic model fit to time series data were $\hat{y}$ = 7.5 - 0.25t + 3.5t2, where t = 1 for 1995. The forecasted value for 2002 is:

• A)-2.0.
• B)10.75.
• C)28.
• D)229.5.

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Definitions:

Average Score

The sum of all the numerical values in a set divided by the number of values in the set, representing the central tendency.

Variable

A component, trait, or aspect that is subject to alteration or modification.

Normally Distributed

A statistical term describing data that forms a bell-shaped curve when plotted, indicating that most values cluster around a central mean and tails off symmetrically towards the extremes.

Standard Deviation

A statistic that measures the dispersion or variability of a dataset relative to its mean, indicating how spread out the data points are.