The Owner of Darkest Tans Unlimited in a Local Mall

question 138

Multiple Choice

The owner of Darkest Tans Unlimited in a local mall is forecasting this month's (October's) demand for the one new tanning booth based on the following historical data: $$\begin{array} { | l | c | } \hline { \text { Month } } & \text { Number of Visits } \\\hline \text { April } & 100 \\\hline \text { May } & 140 \\\hline \text { June } & 110 \\\hline \text { July } & 150 \\\hline \text { August } & 120 \\\hline \text { September } & 160 \\\hline\end{array}$$
What is the monthly rate of change (slope) of the least squares trend line for these data?

• A) 320
• B) 102
• C) 8
• D) -0.4
• E) -8

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Definitions:

Relationship Among Variables

This describes how variables or data features interact with each other, indicating patterns, trends, or causal connections.

Observations

Data points or items recorded during an experiment or research study.

Determination

The firmness of purpose or the process of establishing something exactly by calculation or research.

Goodness Of Fit

A statistical analysis to determine how well sample data fit a distribution from a population with a normal distribution.