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# S Hale Chapter 1

TermDefinition
Hypothesis A hypothesis is a statement of what you think will happen during an investigation. The words to explain if then because.
Observation An observation is something find out about objects, events, or living things by using your senses.
Experiment An experiment is the use of scientific methods to test your hypothesis.
Variable A variable is something that can change in a test.
Control Group The group that doesn't receive the special treatment.
Procedures Procedures are step-by-step instructions for completing a task.
Data Data are information from which a conclusion can be drawn or a prediction can be made.
Precision Precision is the ability to consistently repeat a measurement.
Accuracy Accuracy is the ability to make a measurement that is as close to the actual value as possible.
Inference An inference is a conclusion based on observations,
Evidence Evidence are observations that make you believe that something is true
Model / Models Models are objects or ideas that represent other things. Models are often used to study things that are very large, have many parts, or are difficult to observe directly.
Surveys Questions that are answer by people.
Sampling Sampling are to collect data. Examine random individuals from a population.
Independent Variable The variable that is change by the scientist; the "I control'.
Dependent Variable Changes when the independent variable changes - what is being measured.
Experimental Group The group that receives the special treatment.

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