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Stella Porto

What Value of Alpha Determines Statistical significance - 0 views

statistics.about.com/...s-Statistical-Significance.htm

value alpha significance statistics

shared by Stella Porto on 09 Mar 16 - No Cached
  • This level of significance is a number that is typically denoted with the Greek letter alpha.
  • Many journals throughout different disciplines define that statistically significant results are those for which alpha is equal to 0.05 or 5%
  • The number represented by alpha is a probability
  • ...2 more annotations...
  • Of all levels of significance the values of 0.10, 0.05 and 0.01 are the ones most commonly used for alpha
  • The smaller the value of alpha, the less likely it is that we reject a true null hypothesis.
Stella Porto

Level of Significance in Hypothesis Testing - 0 views

economics.about.com/...signifl.htm

level significance hypothesis testing statistics confidence

shared by Stella Porto on 10 Mar 16 - No Cached
  • The most common significance level is 0.05 (or 5%) which means that there is a 5% probability that the test will suffer a type I error by rejecting a true null hypothesis. This significance level conversely translates to a 95% level of confidence, meaning that over a series of hypothesis tests, 95% will not result in a type I error.
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