Exhibit 13-6
Below You Are Given a Partial Computer Output

question 99

Multiple Choice

Exhibit 13-6
Below you are given a partial computer output based on a sample of 16 observations.
$\begin{array}{lcc} & \text { Coefficient } & \text { Standard Error } \\\text { Intercept } & 12.924&4.425\\\mathrm{X}_{1} & -3.682&2.63. \\\mathrm{X}_{2} &45.216&12.560\\\end{array}$
$\text { Analysis of Variance }$

$\begin{array}{lccc}\text { Source of } & \text { Degrees } &\text { Sum of } &\text { Mean }\\\text { Variation } & \text { of Freedom }&\text { Squares } & \text { Square }&F\\\text { Regression }&&4,853&2,426.5\\\text {Error }&&&485.3\end{array}$
-Refer to Exhibit 13-6. We want to test whether the parameter ?? is significant. The test statistic equals

• A) -1.4
• B) 1.4
• C) 3.6
• D) 5

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Definitions:

Reliability Estimates

Measures or indicators of the consistency or stability of a test, scale, or measurement instrument over time.

Standard Deviation

A measure of variability that describes how scores vary around the mean. In all normal curves the percentage of scores between standard deviation units are the same; hence, the standard deviation combined with the mean can tell us a great deal about a set of test scores.

Percentile Score

A score indicating the percentage of scores in a distribution that a specific score is equal to or higher than.

Specific Area

A distinct part or section within a larger field or space, often designated for a particular purpose or characterized by a unique attribute.