What is the difference between practical and statistical
significance?
A. Statistical significance is associated with p values, but
practical significance is not.
B. Practical significance is associated with p values, but
statistical significance is not.
C. There is no difference.
D. Neither A nor B is true.
What is Statistical Significance? Date 01/29/2019
What is statistical significance? If we randomly assign
subjects to two groups we would expect there to be some difference
in the groups just by chance. If a difference is statistically
significant then it is large enough that we would not expect it to
happen just by chance. When we compare the results of an
experiment, if there is a statistically significant difference then
we can conclude that there is a cause-effect relationship between...
1. What is the difference between practical significance and
statistical significance? Give an example of something that might
be statistically significant, but not practically significant.
2. What is a Type I error? Give an example.
3. What is a Type II error? Give an example.
Research Method
What is the difference between statistical significance and
clinical significance? Search the literature and cite at least one
or two examples that illustrate the differences between the
two.
Which statistical tests would be used to determine statistical
significance, and which statistical tests would be used to
determine the variance from a population mean? Give a brief
description of their key differences.