O A. A prediction based on the data is reliable, because there are no noticeable differences among the samples.
OB. A prediction based on the data is not completely reliable, because
the mean of sample 1 is noticeably lower than the means of the
other two samples.
C. A prediction based on the data is not completely reliable, because
the means of samples 2 and 3 are too close together.
OD. A prediction based on the data is reliable, because the means of
samples 2 and 3 are very close together.