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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 or 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
Control group the group that does not get the special treatment
independent varible one that you can control
dependent varible changes when an indepdent variable changes
procedures step by step instructions for completing a task
data information from which a conclusion can be drawn
accuracy ability to make a measurement that is close to the correct value
precision ability to consistently repeat a measerment
inference a conclusion based on observations
evidence observations that make you believe that something is true
model objects or helpful tools
survey questions that are answered by people
sampling examing ramdom individuals from a population
experimental group the group that gets the special treatment