When Would an Experimental Result Be Considered Statistically Significant

Question

When would an experimental result be considered statistically significant?
A) The experiment is double blind.
B) Experimental and control subjects are randomly assigned.
C) The result is unlikely to be due to chance alone.
D) The result supports the hypothesis being tested.

Accepted Answer

Statistical significance is determined by analyzing the probability of obtaining the observed results by chance alone. If the probability is very low (typically less than 5%), the result is considered statistically significant. Therefore, option C, which mentions that the result is unlikely to be due to chance alone, is the correct answer. The other options (A, B, and D) are important in experimental design and can strengthen the validity of the results but are not directly related to statistical significance.