The Manager of a Fast Food Restaurant Wants to Determine

question 191

Essay

The manager of a fast food restaurant wants to determine how sales in a given week are related to the number of discount vouchers (#) printed in the local newspaper during the week. The number of vouchers and sales ($000s) from 10 randomly selected weeks is given below with Excel regression output. $$\begin{array} { | c | c | } \hline \text { Number of vouchers } & \text { Sales } \\\hline 4 & 12.8 \\\hline 7 & 15.4 \\\hline 5 & 13.9 \\\hline 3 & 11.2 \\\hline 19 & 18.7 \\\hline 10 & 17.9 \\\hline 8 & 16.8 \\\hline 6 & 15.9 \\\hline 3 & 11.5 \\\hline 5 & 13.9 \\\hline\end{array}$$ Identify possible outliers.

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Definitions:

Overloading

A programming concept where two or more methods in the same class have the same name but different parameters.

Superclass

The class from which a subclass inherits fields and methods in object-oriented programming.

Inheritance

A fundamental concept in object-oriented programming that allows one class to inherit properties and methods from another class.

"Is-a" Relationship

A concept used in object-oriented programming to describe an inheritance relationship between a subclass and its superclass.