Examlex
For a given data set,the confidence interval will be wider for 95% confidence than for 90% confidence.
Random Assignment
Use of a random "chance" procedure (such as a random number generator or coin toss) to determine the condition in which an individual will participate.
Confounding Variable
A factor other than the independent variable that might produce an effect in an experiment, leading to inaccurate results if not controlled.
Independent Variable
The variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable.
Confounding Variable
An external variable that affects both the variables being studied, potentially misleading the results of an experiment.
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