Answer the Question Using the Value of R and the Given

question 38

Multiple Choice

Answer the question using the value of r and the given best-fit line on the scatter diagram.
- The scatter diagram and best-fit line show the data for the number of cars waiting by a school (y) and the amount of time after the end of classes (x) . The correlation coefficient r is -0.55. Predict the number of cars at time 8
After the end of classes.

• A)6
• B)No valid prediction is possible.
• C)5

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Definitions:

Unit Variable Cost

The expense incurred from manufacturing an extra unit of a product.

Break-even Chart

A graphical representation that displays the point at which total costs and total revenues are equal, indicating no net loss or gain.

Total Revenue

The total amount of money generated by a company from its sales of goods or services before any costs or expenses are deducted.

Total Cost

The sum of all expenses incurred in the production of goods or services, including both fixed and variable costs.