Environmental Science Chapter 2.1, 2.2

Question 1

in an experiment, a group that is identical to a control group except for one factor

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experimental group

Question 2

a factor that changes in an experiment in order to test a hypothesis

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variable

Question 3

in an experiment, a group that serves as a standard of comparison

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control group

Question 4

procedure that is carried out under controlled conditions

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experiment

Question 5

a testable idea or explanation

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hypothesis

Question 6

the average

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mean

Question 7

To test the gas as the problem you would want to make sure you

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change only the gas type

Question 8

any piece of information acquired through observation or experimentation

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data

Question 9

a statement made in advance that expresses the results that will be obtained

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prediction

Question 10

a plan designed to show the structure or workings of an object

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model

Question 11

a verbal or graphical explanation for how a system works or is organized

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Conceptual Model

Question 12

the arrangement of the members of a statistical population

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distribution

Question 13

one or more equations that represent the way a system or process works

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mathematical model

Question 14

Your car is getting bad mileage. You think it is due to bad gas. Gas type is your...

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independent variable, experimental variable

Question 15

the probability of an unwanted outcome

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risk

Question 16

the group of individuals selected for an experiment

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sample

Question 17

the likelihood of something happening

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probability

Question 18

the process of obtaining information by using the senses

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observation

Question 19

the collection and classification of data that are in the form of numbers

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puppies, statistics

Question 20

Linear dependence between two variables. Helpful when impossible or unethical to do otherwise.

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correlation

Questions 20