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Chapter 1

hypothesis a statement of what you think will happen during an investigation
observation something you find out about objects, events, or living things by using your senses
experiment the use of scientific methods to test your hypothesis
variable something that can change in a test
independent variable one that you can control
dependent variable changes when an independent variable changes. it is what gets measured. it gives you data.
control group the group that doesn't get the special treatment
procedures step-by-step instructions for completing a task
data information from which a conclusion can be drawn from
precision the ability to consistently repeat a measurement
accuracy the ability to make a measurement that is close to the actual value as possible
inference a conclusion based on observations
evidence observations that make you think that something is true
model models represent things
surveys questions that are answered by people
sampling examining random individuals from a population
experimental group the group that gets the special treatment