experimental design Flashcards
accuracy
a description of how close a measurement is to the true value of the quantity measured
control
standard that is used for comparison
data
facts, figures, and other information gathered through observations
dependant variable
the measurable effect in which the research is interested
error
anything that causes the measured data to be different from the true values
experimental groups
the parts of an experiment that have variables manipulated
hypothesis
a testable prediction based on observations.
independant variable
the experimental factor that is manipulated; the variable whose effect is being studied
law
a concise statement that summarizes the results of many observations and experiments
precision
the degree to which repeated measurements show the same result
qualitative data
descriptive written data
quantitative data
numerical data that can be organized with graphs and tables
replication
repeating the a research study in many groups
sample size
the number of subjects used in an experiment or study- the larger the better
theory
a well-tested explanation that unifies a broad range of observations
