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Results tagged with statistical-significance
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user 110675
Statistical significance is a characteristic of a statistic viewed in light of a null hypothesis and a given significance level. It reflects whether the statistic belongs to the rejection region (is statistically significant) or the acceptance region (is not statistically significant).
1
vote
How to check if a value doesn't appear by chance with respect to a distribution?
The easiest way is to convert your distribution to a density, and calculate a one tailed p-value by integrating.
#Original OPs code
mean=100; sd=15
x <- seq(-4,4,length=100)*sd + mean
hx <- dnorm(x …
- 527
2
votes
Accepted
Adjusting the confidence level after the experiment
The short answer is no. A big no-no is going back and re-adjusting your confidence intervals post-hoc (i.e. after you have done the experiment). See for example:http://blog.minitab.com/blog/michelle-p …
- 527