A researcher lists the lengths of five rods in centimeters: 8, 10, 12, 14, and 16. The mean length is calculated. Then a sixth rod of length 12 cm is added. Which statement correctly compares the two means?
The mean of the original data set is greater than the mean of the new data set.
The mean of the original data set is less than the mean of the new data set.
The means of both data sets are equal.
There is not enough information to compare the means.
