An experimental result is called statistically significant when
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.

Question

Quizplus · Accepted Answer

Statistical significance means that the result of an experiment is unlikely to be due to chance alone. Therefore, option C is the correct answer. Option A is incorrect as double-blindness refers to the procedure of conducting the experiment without knowing the group allocation of subjects. Option B is also incorrect as random assignment is a method to reduce bias in experiments, but it does not determine statistical significance. Option D is incorrect as the result may not necessarily support the hypothesis being tested to be statistically significant.

An Experimental Result Is Called Statistically Significant When