SCENARIO 10-2
a Realtor Wants to Compare the Mean Sales-To-Appraisal $\mathrm{A}: 1.2,1.1,0.9,0.4$

question 98

Multiple Choice

SCENARIO 10-2
A realtor wants to compare the mean sales-to-appraisal ratios of residential properties sold in four neighborhoods (A, B, C, and D) .Four properties are randomly selected from each neighborhood and the ratios recorded for each, as shown below. $\mathrm{A}: 1.2,1.1,0.9,0.4$$\quad C: 1.0,1.5,1.1,1.3$
B: $2.5,2.1,1.9,1.6$$\quad \mathrm{D}: 0.8,1.3,1.1,0.7$
Interpret the results of the analysis summarized in the following table:
$\begin{array}{lcclcc}\hline \text { Source } & \text { df } & \text { SS } & \text { MS } & \text { F } & \text { PR }>\text { F } \\\hline \text { Neighborhoods } & & 3.1819 & 1.0606 & 10.76 & 0.001 \\\text { Error } & 12 & & & & \\\text { Total } & & 4.3644 & & &\end{array}$
-Referring to SCENARIO 10-2, the among group degrees of freedom is

• A)3
• B)4
• C)12
• D)16

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Definitions:

Temporalis

A muscle on the side of the head that is involved in chewing and jaw movement.

Trapezius

A large triangular muscle in the upper back that extends to the neck and shoulders, playing key roles in moving, rotating, and stabilizing the shoulder blade and upper spine.

Biceps Brachii

A muscle in the upper arm responsible for flexion at the elbow and supination of the forearm.

Sternocleidomastoid

A muscle in the side of the neck that runs from the sternum and clavicle to the mastoid process of the temporal bone.