Question

O A. A prediction based on the data is reliable, because there are nonoticeable differences among the samples.OB. A prediction based on the data is not completely reliable, becausethe mean of sample 1 is noticeably lower than the means of theother two samples.C. A prediction based on the data is not completely reliable, becausethe means of samples 2 and 3 are too close together.OD. A prediction based on the data is reliable, because the means ofsamples 2 and 3 are very close together.

Answer 1

The mean is a reliable measure of the central tendency when the data are normally distributed but when the data are skewed, the mean is less relaible.

In our case, we can see that there are not many outliers because the means are very close, then, the answer is

A) A prediction based on the data is reliable, because there are no noticeable differences among the samples.