The Following Data Represent the Demand (Y) of an Item

question 7

Short Answer

The following data represent the demand (Y) of an item at a local shop and their price (X).
Use the data to determine:
a) the coefficient of correlation between demand for the item and price,
b) the proportion of the variation in demand accounted for by price.

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Definitions:

Net Operating Income

A profitability measure calculated as the difference between a company's revenues from its operations and its operating expenses, excluding non-operating expenses and income.

Administrative Expenses

Costs related to the general management and administration of an organization, such as salaries of executive officers and costs of legal services.

Net Operating Income

The profit a company makes from its usual business operations, before taxes and interest, calculated by subtracting operating expenses from revenue.

Machine-Hours

A measure of production time used in cost accounting that quantifies the hours a machine is operated.