Which of the following has the same mean, median and mode?
(a) 6, 2, 5, 4, 3, 4, 1
(b) 4, 2, 2, 1, 3, 2, 3
(c) 2, 3, 7, 3, 8, 3, 2
(d) 4, 3, 4, 3, 4, 6, 4
For (d): Data = 4, 3, 4, 3, 4, 6, 4.
Mean = \(\dfrac{28}{7}=4\).
Median = 4 (middle value).
Mode = 4 (most frequent).
Thus, all three are equal.