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What principles of experimental design ensures that the explanatory variable and not some variable over which the experimenter has no control is causing observed changes in the res?
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∙ 14y ago
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∙ 14y ago
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What type of data do you collect during an experiment?
Experimental data. Information about what conditions are present when measured or observed.
What is the difference between dependent and independent variables?
The independent variable is the variable being manipulated in the experiment in order to show the effect on the dependent variable. It is also called the experimental variable.The dependent variable is the variable being observed in the experiment. Changes in the dependent variable as a result of changes in the independent variable are observed, which is the purpose of the experiment. Dependent variable is also called the response variable.
What is the dependent variable in sciene?
A dependent variable is the variable being tested in a scientific experiment.The dependent variable is 'dependent' on the independent variable. As the experimenter changes the independent variable, the change in the dependent variable is observed and recorded.For example, a scientist is testing the effect of light and dark on the behavior of moths by turning a light on and off. The independent variable is the amount of light and the moth's reaction is the dependent variable.
Why is probability important to a scientist?
Some but not all scientific models are based on the ability to determine the likelihood that a given experimental outcome has happened by chance alone. If you have an accurate understanding of how the variables in the experiment change when nothing in particular is affecting them, then you have a way to establish some confidence that your outcome is the result of your experimental procedure and not the result of purely random events. The experimental 'lingo' is that the researcher has to determine if the 'Null Hypothesis' can be rejected. The Null Hypothesis is that the experimental outcome is not significantly different from what you would expect if the experiment had no effect at all.As an example, if the probability in the natural world is that some event will happen by chance only one tenth of one percent of the time, then when I observe that event as my experimental outcome, I can be reasonably sure that my procedure has brought about the event; it is so unlikely that it happened by chance. It is not perfect, but few scientific procedures are. This also highlights the importance of replicating studies or of doing meta-analyses of experimental data gathered in many experiments to further reduce the likelihood that observed outcomes are nothing more than chance events.
What is a scientific error?
Error has different meanings in different contexts. In some cases it is a synonym for "mistake". In this sense "Human Error" would be careless accidents that could be avoided with care. In Scientific terms, however, "error" simply refers to the difference between an observed value and it's theoretical "expected" value, regardless of whether this difference relates to a "mistake" by the experimenter, or is the result of some uncontrolled variable in the experiment.
When an experimenter unintentionally gives cues to participants about the way they are expected to behave this is an example of?
Observation changing the observed.
Kevin recorded the effects of violent video games on antisocial behavior. Which of these is a response variable?
Variables of interest in an experiment (those that are measured or observed) are called response or dependent variables. Other variables in the experiment that affect the response and can be set or measured by the experimenter are called predictor, explanatory, or independent variables. Antisocial behavior
Ann recorded the effects of watching television on physical fitness. Which of these is a response variable?
Variables of interest in an experiment (those that are measured or observed) are called response or dependent variables. Other variables in the experiment that affect the response and can be set or measured by the experimenter are called predictor, explanatory, or independent variables.Variable - not consistent or having a fixed pattern; liable to changePhysical fitness
Match the experimental conditions applied to the photoelectric effect observed.?
conditions of photoelectric effect
Why is replication important in experimental?
Observed results are less likely to be affected by random chance.
Why is replication in experimental design?
Observed results are less likely to be affected by random chance.
What are synonyms for empirical?
first-hand, direct, observed, practical, actual, experimental, pragmatic, factual
Why is replication important and experimental design?
Observed results are less likely to be affected by random chance.
What is the variable that is observed and that changes in response to the manipulated variable?
The dependent variable is the observed one. If there is an experimental effect, then the changes you see in this variable depend on what you did to the manipulated variable.
What you observed to the different products applied in your plants as a principles in mineral nutrition?
What you observed in the different products applied to your plants as principles in mineral nutrition will depend on which products were used. The types of plants will also play a factor.
What constitutes a science?
When observation is present and various experimental techniques are employed to determine the cause of what's observed.
What type of data do you collect during an experiment?
Experimental data. Information about what conditions are present when measured or observed.
