Consider the set
Which is a true statement?
(a) 15 is the mean of the data set.
(b) 15 is the median of the data set.
(c) 15 is the mode of the data set.
(b) and (c) only
(a) and (b) only
(a) and (c) only
(a) , (b), and (c)
None of the three