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chapter one

TermDefinition
variable something that can change in a test
hypothesis statement of what you think will happen during an investigation
control group a standard against which change is measured
observation something you find out about objects, events, or living things using your senses
procedures step-by-step instructions for completing a task
experiment the use of scientific methods to test hypothesis
inference a conclusion based on observations
data information from which a conclusion can be drawn or a prediction can be made
evidence observations that make you believe someting is true
precision the ability to consistantly repeat a measurement
accuracy ability to make a meke a measurement that is as close to the actual value as possible
models objects or ideas that represent certain things
survey Questions that are answered by people. Great for opinion questions.
sampling examine random individuals from a random population
independent variable the variable u can control or change
dependent vairable its is whats measured. changes when the independent varible changes.
experimental group the group that doesnt get
control group the group that gets the special treatment
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