Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Oct 2019
Total (night) = 4 + 3 + 2 + 1 = 10
N = 10
X = 8, 7, 6, 5, 4, 3, 2, 1, 0
X̄ = 4.5
ΣX = 45
Total (day) = 5 + 4 + 3 + 2 + 1 = 15
N = 15
X = 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
X̄ = 4.5
ΣX = 45
Total = 10 + 15 = 25