The heights of four fifth grade students are 58,56,60 and 62 inches. What are the mean median and standard deviation of this dataset, and the standard deviation of the new dataset by adding 2 to each number, i.e., 60,58, 62, 64? O 59.59.2.58 and 4.58 O 59.58.2.58 and 4.58 58,59,2.58 and 4.58 O 59,59,2.58 and 2.58 58,58,2.58 and 2.58