Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
cr
q wt (9.)
X Y x2 y2 xy
25 43 625 1849 1075
27 45 729 2025 1215
10 41 100 1681 410
8 37 64 1369 296
11 42 121 1764 462
10 40 100 1600 400
8 34 64 1156 272
8 36 64 1296 240
35 43 1225 1849 1505
Σ 142 361 3092 14589 5875
r = n Σ xy - Σ x Σ y / √[nΣx² - (Σx)²][nΣy² - (Σy)²]
= 9(5875) - (142)(361)
[9(3092) - 20164][131301 - 130321]^(1/2)
~ [52875 - 51262 / (7664.980)^(1/2)] = [1613 / (7,510,720)^(1/2)] ~ [1613 / 2741]
~ 0.588