Definitions for "Significance level"
A value selected by the researcher to fix the probability of a Type I Error.  Denoted as , this arbitrary choice is always a small probability.  The most common choice in behavioral research is .05, while .01 is occasionally used.  The significance level determines the critical value drawn from the statistical table.
The probability of rejecting a set of assumptions when they are in fact true.
the probability of finding a relationship between your treatment and effect when there isn't one in reality.
The measure of confidence associated with the accuracy of your data as a representation of the population as a whole.
Keywords:  lane, steps
Keywords:  test, see
See significance test.
Keywords:  set, value
Set as the p-value.