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chapter 1

vocabulary for chapter 1

hypothesis a hypothesis is a statement of what you think will happen during an investigation.
observation an observation is something you 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 a control group is the group that does not get the product.
procedures procedures are step-by-step instruction for completing a task.
model models are often used to study things that are very large, have many parts, or are difficult to observe directly.
survey a survey is a question that are answered by people.
sampling scientists examine random individuals from a population.
independent variable an independent variable is one that you can control.
dependent variable a dependent variable is the variable that is measured and will change when the independent variable changes.
control group a control group is a standard against which change is measured
experimental group the experimental group is the same as the control group except that one factor has been changed.
data information from which a conclusion can be drawn or a prediction can be made
precision the ability to constantly repeat a measurement
accuracy the ability to make a measurement that is as close to the correct value
inference a conclusion based on observations
evidence observations that make you believe something is true
Created by: mallory-thompson