A study reports finding a "significant" difference between group means.What can be concluded about this report?
A) The findings must be very important.
B) To fully assess the importance and impact of the results, we must also have information about the spread of the distributions.
C) There is no way to tell the practical importance of these results.
D) The difference between group means is so small that there is no effect when the findings are generalized to the overall population.

Question

Quizplus · Accepted Answer

Without information about the spread of the distributions, it is difficult to know if the difference between the means is large enough to be practically significant. Therefore, we need to assess the variability of the data to fully evaluate the impact of the results.

A Study Reports Finding a "Significant" Difference Between Group Means