What Does a Psychologist Usually Mean When She Says a Particular

Multiple Choice

What does a psychologist usually mean when she says a particular experimental result is 'statistically significant'

A) The result reflects a large difference between the mean scores in one condition and the mean scores in another.
B) The result is important in a practical sense.
C) The result will allow psychologists to support one theory over alternative theories.
D) The result is unlikely to have occurred solely as a result of chance.