In the Testing of Water for Coliforms,the Presumptive Test Involves

question 8

Multiple Choice

In the testing of water for coliforms,the presumptive test involves detection of

• A)gas production in a lactose broth medium.
• B)sheen production on a selective medium.
• C)a gram-negative nonspore-forming rod.
• D)all of the choices

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Definitions:

Independent Variable

A variable that is manipulated in an experiment to observe its effect on the dependent variable, without being influenced by other variables.

Dependent Variable

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

Least Squares Regression Line

A straight line that minimizes the sum of the squared differences between the observed and theoretical values.

Predict

To make an educated guess about the outcome of an event based on current information or data analysis.