Instruction 14-13
the Monthly Advertising Expenditures of a Department Store

question 131

Essay

Instruction 14-13
The monthly advertising expenditures of a department store chain (in $1,000,000s) were collected over the last decade. The last 14 months of this time series follows:
$\begin{array}{cc}\text { Month } &\text { Expenditures }\\&(\$)\\1 & 1.4 \\2 & 1.8 \\3 & 1.6 \\4 & 1.5 \\5 & 1.8 \\6 & 1.7 \\7 & 1.9 \\8 & 2.2 \\9 & 1.9 \\10 & 1.9 \\11 & 2.1 \\12 & 2.4 \\13 & 2.8 \\14 & 3.1\end{array}$


-Referring to Instruction 14-13,set up a scatter diagram (i.e.,time-series plot)with months on the horizontal X-axis.

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Definitions:

Biological Perspective

A way of looking at psychological issues by studying the physical basis for animal and human behavior.

Genetic Factors

Influences on an individual's traits and behaviors that originate from their genetic makeup.

Chemical Imbalances

A theoretical model suggesting that mental health conditions are associated with abnormal levels of neurotransmitters in the brain.

Brain Abnormalities

Structural or functional deviations in the brain that may lead to various neurodevelopmental, psychiatric, or neurological conditions.