1. The following items represent the number of birds observed at a given feeder over the past several days. What is the rangeof birds to visit that feeder?

43, 18, 60, 45, 78, 45, 53, 62, 36, 74, 50, 43, 65

Round to 2 decimal places as needed

2. Lise Meitner bombarded 300 uranium atoms with a stream of neutrons for 10 seconds each. She recorded the energy released when the uranium atom was split. What is the sampleof this study?

3. Gary Chalmers is giving a sample ofstudents at Springfield Elementary School IQ tests. To select his sample, he randomly selects 5 kindergartners, and 4 each from first through fifth grade. What sampling method did Garyemploy?

4. The following items represent the number of birds observed at a given feeder over the past several days. What is the mean number of birds to visit that feeder?

15, 87, 52, 27, 32, 42, 67, 34

Round to 2 decimal places as needed

5. The following items represent the number of birds observed at a given feeder over the past several days. What is the mean number of birds to visit that feeder?

83, 4, 88, 51, 41, 47, 60