Unit 1 Experimental Design LC Flashcards
Testable question
ones which can be answered through experimental inquiry and observation of the natural world.
Non-testable question
Questions that cannot be answered by direct observation or by evidence gathered through experimental inquiries
Quantitative
Measuring something by using numbers
Qualitative
Measuring something by description
Trials
a tryout or experiment to test quality, value, or usefulness
Observation
noticing or perceiving information from a primary source.
Empirical evidence
information gathered directly or indirectly through observation or experimentation
Data
facts and statistics collected together for reference or analysis.
Model is science
a representation of a phenomenon, object, structure, or system
Analogy
A comparrision to find similarities between two things
Prototype
a physical model that can be shown to others
Hypothesis
an educated guess
Variable
anything that can change or be changed in an experiment
Procedure
steps taken in an experiment
Accuracy
how close your measurement is to the “true” value
Precision
how close 2 or more measurements are to each other
Scientific Method
the process of observing, asking questions and finding answers through tests
Control
the part that stays the same and is used to tell if the experiment is working
Constant
factors that do not change in an experiment
Predict
to say what will happen before the experiment begins
Infer
to make a well informed guess
Independent Variable
variable that is manipulated in the experiment
Dependent Variable
variable that changes depending on the independent variable’s outcome
Manipulated Variable
something changed on purpose during an experiment
Responding Variable
the part of an experiment that a scientists measures and observes closely for a change or a response.
Sample Size
the number of observations included in the study
Validity
how accurately a method measures what it intends to measure
Trends in Data
data is showing an upward or downward movement for part or all of the time series
Correlation
describes the relationshiop between variables
Variability
describes how far apart data points lie from each other and from the center of a distribution
Mass
the amount of matter that makes up an object
Volume
the amount of space an object takes up
Weight
force exerted on a body by gravity
Percent
a number that is a fraction of 100
Rate
change in quantity with respect to change in another quantity
Ratio
a comparison of two or more numbers and it indicates the numbers’ sizes in relation to each other
Line Graph
a display of information that changes continuously over time
Bar Graph
a graphical representation of data, quantities, or numbers using bars or strips.
Pie Graph
a circular graphic, divided into slices to show numerical proportion
Scatterplot
uses dots to represent values for two different numeric variables
Claim
a generalization based on a reported statistically significant effect.
Evidence
information collected that shows the truth
Reason
the ability to recognize and understand the scientific method, concepts, processes, and applications used in the pursuit of knowledge
Theory
an idea or set of ideas that is intended to explain facts or events
Bias
a flaw in the study when collecting or interpreting the data
