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Qualitative data
Descriptive data about a variable
Precision in measurements
This refers to the closeness of the measurements to each other
Continuous data
One which can take any data
Bar chart
A graph which is drawn to show the relationship between one continuous and one discontinuous variable
Variable
A condition in an experiment that can be controlled or changed
Water bath
A container of water heated to a given temperature which can be used to either vary or control the temperature
Independent Variable
Variable being changed in an experiment
Confounding Variables
A variable that could effect the independent or dependent variable and therefor the result of the experiment
Hypothesis
An explanation of an observation that can be tested through experimentation
Accuracy
Ensuring that measurements are close to the true value
Histogram
A graph which is drawn to show the frequency of one continuous variable
Discontinuous variable
One which can only take certain values
Control variables
Variables that are not being tested but must be kept the same in case they affect the experiment
Systematic error
A consistent variable which affects each measurement in the same way, normally caused by faculty measuring equipment or difficulties in reading that equipment
Random error
an error in measurement which is caused by factors which vary from one measurement to another
Dependent Variable
The variable being measured in an experiment
Control experiment
A group within an investigation or study that receives exactly the same treatment as the experimental groups with the exception of the variable being tested
Prediction
A statement of the expected results in an experiment based on the hypothesis being tested
Line graph
A graph which is drawn to show the relationship between two continuous variables
Quantitative data
Numerical data that finds the quantity, amount of range of the variable
Precision in measurements
the level of refinement in a measurement as shown by the number of significant figures given
Buffer
A solution which can maintain a relatively stable pH
Theory
a well-substantiated explanation of some aspect of the natural world that has been repeatedly tested and confirmed through observation and experimentation
Reliable
results that can be replicated by other people
anomaly
A result or observation that deviated from what is normal or expected