Table 21 -Given the Data in Table 2

question 9

Multiple Choice

Table 2.1
$$\begin{array} { l c } \text { Population: } & 260 \text { million } \\\text { Employed: } & 130 \text { million } \\\text { Unemployed: } & 10 \text { million } \\\text { Retired: } & 35 \text { million } \\\text { Under Age 16: } & 60 \text { million }\end{array}$$
-Given the data in Table 2.1,the unemployment rate is

• A) 3.8%.
• B) 5.0%.
• C) 7.1%.
• D) 7.8%.

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Definitions:

Dependent Variable

The variable in an experiment that is expected to change in response to manipulations in the independent variable.

Extraneous Variable

A variable that is not of interest in a study but can affect the outcome of the experiment, potentially leading to erroneous conclusions if not controlled.

Control Factors

Variables that are kept constant and unchanging throughout an experiment to ensure that the results are due to the independent variable being tested.

Independent Variable

In an experiment, the variable that is deliberately changed or manipulated to observe its effect on a dependent variable.