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scientific method

TermDefinition
scientific experiment PROCEDURE that TESTS a HYPOTHESIS by collecting information under controlled conditions/ tests one one variable
Problem always in form of a question; the question we are trying to answer by doing the experiment
Hypothesis A testable prediction
Variable anything that could change in an experiment and affect the results/outcome of the investigation
independent variable the experimental factor that is manipulated
dependent variable The factor being measured; result or data
experimental group A group within an experiment that is exposed to the independent variable.
Constant factors These are factors that are held constant throughout the experiment. these include all factors except the experimental variable.
control group the group that does not receive the experimental treatment, used for comparison
procedure a set sequence of steps to complete an experiment
Trials replicate groups that are exposed to the same conditions in an experiment
Data Table organizes data into rows and columns
Observation Use of one or more of the senses-sight, hearing, touch, smell, and sometimes taste- to gather information
Experiment An investigation done in order to make a discovery or test a hypothesis
Evaluate Estimate the nature, quality, ability of significance of your experiment
Theory A set of assumptions, propositions, or accepted facts that attempt to provide a plausible or rational explanation of cause and effect relationship among a group of observed phenomenon.
Graphs visual representation of the relationship between two different variables ex: bar graph, line graph
Data Analysis making sense of observations and data collected during an experiment and looking at patterns and relationships between the independent variable and the dependent variable
inference a conclusion reached on the basis of evidence and reasoning
drawing conclusion combining several pieces of information to make an inference
Bar Graph a type of graph used to categorize data
line graph A graph that compares two variables (independent vs. dependent)
Pie graph/chart used to show parts of a whole (percentages) or categories of data
What are 3 ways to increase validity 1) increase sample size 2) increase trials (test again) 3) peer review
Valid Having a sound basis in logic or fact that is reasonable.
Scientific Method The scientific method is a specific method by which scientists gain knowledge about the world.
Created by: olivia83
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