Table 4 Observed and expected frequencies of the ABO blood group among the Nilotics and ‘highlanders’ in Gambella hospital, southwestern Ethiopia
Population | ABO group | Observed(o) | Expected(e) | Deviation(d) | d2/e |
|---|---|---|---|---|---|
Nilotics | A | 64 | 64.2070 | −0.2070 | 0.0006 |
B | 49 | 44.0992 | 4.9008 | 0.5460 | |
AB | 5 | 9.7175 | −4.7175 | 2.2901 | |
O | 120 | 119.9758 | 0.0242 | 0.0001 | |
X2 (∑d2/e) | 2.8368 | ||||
‘Highlanders’ | A | 93 | 92.9786 | 0.0214 | 0.0000 |
B | 43 | 35.3999 | 7.6001 | 1.6316 | |
AB | 10 | 17.6516 | −7.6516 | 3.3168 | |
O | 65 | 64.9698 | 0.0302 | 0.0000 | |
X2 (∑d2/e) | 4.9484 |