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Chapter 1
Term | Definition |
---|---|
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 hypothisis |
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 is measured. This is your data |
control group | The group that does not get the special treatment. |
Procedures | step-by-step instructions for completing a task |
Data | info from which a conclusion can be drawn or a prediction can be made |
Precision | the ability to consistently repeat a measurement |
Accuracy | the ability to make a measurement that is as close to the actual value as possible. |
Inference | a conclusion based on observations. |
Evidence | observations that make you believe that something is true. |
Models | objects or ideas that represent other things |
Survey | Questions that are answered by people. Great for opinion questions. |
Sampling | Examining random individuals from a population |
Experimental group | The group that gets the special treatment. |