Carcass wrote:
The numbers of species of insects collected by each of several students during a weeklong school science project were 30, 27, 21, 31, 24, and 41. What is the median of those numbers?
(A) 27
(B) 28.5
(C) 29
(D) 30.5
(E) 31
For finding median, first arrange the numbers in ascending or descending order
{21, 24, 27, 30, 31, 41}. Since there are even number of terms, median is average of middle two terms.
median = (27 + 30)/2 = 28.5
Answer is B)