Instruction 12 -Referring to Instruction 12

question 51

Multiple Choice

Instruction 12.2
A chocolate bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses six country towns and cities and offers the chocolate bar at different prices. Using chocolate bar sales as the dependent variable, the company will conduct a simple linear regression on the data below:
$$\begin{array} { | l | l | l | } \hline \text { City } & \text { Price(\$) } & \text { Syles } \\\hline \text { Toowoomba } & 1.30 & 100 \\\hline \text { Broken Hill } & 1.60 & 50 \\\hline \text { Bendigo } & 1.80 & 50 \\\hline \text { Kalgoorlie } & 2.00 & 40 \\\hline \text { Launceston } & 2.40 & 38 \\\hline \text { Port Augusta } & 2.50 & 32 \\\hline\end{array}$$
-Referring to Instruction 12.2,what is the coefficient of correlation for these data?

• A) 0.8854
• B) 0.7839
• C) -0.7839
• D) -0.8854

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Definitions:

Households

Units consisting of one or more people who live in the same dwelling and share meals or living accommodation; may consist of a single family or some other grouping of people.

Statistical Categories

Classification schemes used in the collection and analysis of data to organize variables or attributes into groups.

Populations

Refers to all the inhabitants of a particular town, area, or country.

Sociologists

Social scientists who study human societies, their interactions, and the processes that preserve and change them.