We Build Dams to

question 43

Multiple Choice

We build dams to .

• A)drain wetlands for urban development
• B)generate electricity, prevent flooding, and provide irrigation
• C)improve the habitat for native fish
• D)control the spread of waterborne diseases
• E)transform watersheds into farms, towns, and recreational areas

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Definitions:

Correlation Coefficient

A numerical measure that describes the strength and direction of a relationship between two variables.

Independent Variable

The variable that is manipulated or changed in an experiment to see if it affects the outcome.

T-test

A statistical test used to compare the means of two groups and determine if they are statistically significantly different.

Correlation Coefficient

A statistical measure that describes the extent to which two variables change together, and the strength of their relationship.