The data below show the number of hurricanes (category 3 or higher) recorded annually before and after 1970. Create an appropriate visual display, and determine whether these data are appropriate for testing whether there has been a change in the frequency of hurricanes.
1944-1969 1970-2013
3, 2, 1, 2, 4, 3, 7, 2, 3, 3, 2, 5, 2, 2, 1, 0, 1, 2, 3, 2, 1,
2,4, 2, 2, 6, 0, 2, 5, 1, 3, 1, 0, 3 2, 2, 2, 3, 1, 1, 1, 3,
0, 1, 3, 2, 1, 2, 1, 1,
0, 5, 6, 1, 3, 5, 3, 3,
2, 3, 6, 7, 2, 2, 5, 2,
5, 4, 2, 0