Describe Various Methods to Help Prevent Air Pollution

question 44

Essay

Describe various methods to help prevent air pollution.

Calculate and interpret percentages from a crosstabulation.

Understand the presentation of data in crosstabulation format, including frequencies and percentages.

Compare two categorical variables using appropriate graphical displays.

Understand the nature-nurture debate and its relevance to psychological traits and behaviors.

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Definitions:

Scientific Method

A systematic and logical approach to discovering how things in the universe work, involving observation, hypothesis formation, experimentation, and conclusion.

Experiment

A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Dependent Variable

In an experiment, the variable that is measured to determine how it was affected by the manipulation of the independent variable.

Independent Variable

The variable in an experiment that is manipulated to observe its effect on the dependent variable.