+A **Type I Error** occurs when one incorrectly rejects a true [Null Hypothesis](/wiki/null_hypothesis). It is a [False Positive](/wiki/false_positive), concluding an effect exists when it does not. The probability of this error is set by the [Significance Level](/wiki/significance_level) in [Hypothesis Testing](/wiki/hypothesis_testing).
+## See also
+- [Type II Error](/wiki/type_ii_error)
+- [Statistical Error](/wiki/statistical_error)
+- [Power](/wiki/power)
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