Consider the Following Part of a Data Set List the Variables in the Data Set

question 345

Essay

Consider the following part of a data set: $$\begin{array} { | c | c | c | c | c | c | c | c | } \hline \begin{array} { c } \text { Age } \\\text { (years) }\end{array} & \text { Sex } & \text { Only child? } & \begin{array} { c } \text { Height } \\\text { (inches) }\end{array} & \begin{array} { c } \text { Weight } \\\text { (pounds) }\end{array} & \begin{array} { c } \text { Credit } \\\text { Hours }\end{array} & \text { GPA } & \text { Major } \\\hline 21 & \text { Female } & \text { Yes } & 67.00 & 140.0 & 16 & 3.60 & \text { animal science } \\\hline 20 & \text { Female } & \text { No } & 62.00 & 130.0 & 18 & 3.86 & \text { biology } \\\hline 28 & \text { Female } & \text { No } & 64.00 & 188.0 & 21 & 3.25 & \text { psychology } \\\hline 21 & \text { Male } & \text { No } & 65.00 & 140.0 & 15 & 2.95 & \text { psychology } \\\hline 24 & \text { Female } & \text { No } & 67.00 & 130.0 & 20 & 3.00 & \text { anthropology } \\\hline 22 & \text { Male } & \text { Yes } & 68.00 & 135.0 & 15 & 2.94 & \text { journalism } \\\hline\end{array}$$
List the variables in the data set. Indicate whether each variable is treated as categorical or
quantitative in this data set. If the variable is quantitative, state the units.

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Definitions:

Endemic Species

Species that are native to and can be found only within a specific geographic area.

Keystone Species

A species that plays a critical role in maintaining the structure of an ecological community, affecting many other organisms in an ecosystem.

Pioneer Species

The first species to colonize previously disrupted or damaged ecosystems, starting a chain of ecological succession that ultimately leads to a more biodiverse steady-state ecosystem.

Herbivory

The eating of plants by animals, a biological interaction essential for energy transfer in many ecosystems.