Chapter 2 Review
Probability
the chance that something will happen
Statistics
the collection and classification of data usually in the form of numbers
Scientific
understanding of the natural world
Recreational
human leisure activity
Experimental Method Steps
-Observing -Hypothesis -Experiment -Data -Draw Conclusions -Repeat Experiment -Share Information
A Good Experiment Contains
-a control group -an experimental group
Two Essential Characteristics a Good Experiment Has
-single tested variable -a control is used
Prediction
a logical statement about what will happen in an experiment if the hypothesis is correct
Scientific Method
a series of steps used by scientists to identify and answer questions
Hypothesis
a testable explanation for an observation
Economic
gain or loss of money
Data
information gathered during an experiment
Observation
information that is gathered by using the senses
Health
maintenance of human health
Social/Cultural
maintenance of humans and their values
Aesthetic
pleasing to the senses
Values
principles or standards we feel are important
Environmental
protection of natural resources
Testable
scientist form testable hypotheses to answer questions
Repeat
scientists do this with experiments to make sure the results are consistent and accurate
Educational
sharing of knowledge
Variable
the factor of interest in an experiment
Independent Variable
the factor that the experimenter on purpose changes
Control Group
the group that does not recieve the experimental treatment in an experiment
Experimental Group
the group that recieves the experimental treatment in an experiment
Risk
the probability of an unwanted outcome
Ethical/Moral
what is right and wrong