find group median for all. (show work)

1. interval frequency

0.5-2.5 5

2.5-4.5 1

4.5-6.5 2

5.5-8.5 7

2. interval frequency

799.5-899.5 3

899.5-999.5 10

999.5-1,099.5 24

1,099.5-1,199.5 12

1,199.5-1.299.5 1

3. interval frequency

41.5-43.5 3

43.5-45.5 7

45.5-47.5 13

47.5-49.5 17

49.5-51.5 19

51.5-53.5 17

53.5-55.5 15

55.5-57.5 7

57.5-59.5 2