A Retailing Outlet Has Been Keeping Daily Sales Records Over

question 96

Essay

A retailing outlet has been keeping daily sales records over the past four weeks, as shown below. $$\begin{array}{l}\quad\quad\quad\quad\quad\quad\quad\text { Week }\\\begin{array} { | l | c c c c | } \hline \text { Dox } & 1 & 2 & 3 & 4 \\\hline \text { Monday } & 20 & 25 & 22 & 27 \\\text { Tuesday } & 26 & 30 & 26 & 28 \\\text { Wednesday } & 28 & 29 & 29 & 26 \\\text { Thursday } & 34 & 32 & 34 & 31 \\\text { Friday } & 38 & 35 & 37 & 36 \\\hline\end{array}\end{array}$$ a. Use the regression technique to calculate the linear trend line.
b. Calculate the daily indexes based on the regression trend line in part (a).
c. What do the daily indexes tell us?

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Definitions:

Homeostasis

The process by which living organisms regulate their internal environment to maintain stable, life-supporting conditions.

Constant Internal State

The concept of maintaining a stable, consistent internal environment in an organism, also known as homeostasis.

An Instinct

An innate, typically fixed pattern of behavior in animals in response to certain stimuli that is unlearned.

An Instinct

A fixed, innate pattern of behavior in animals in response to certain stimuli.