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. 2017 May 31;12(5):e0177860. doi: 10.1371/journal.pone.0177860

Table 3. Contingency table for occurrences of Dryophytes suweonensis and Lithobates catesbeianus throughout the range of D. suweonensis.

The expected counts are the value expected if there were no relationship between the occurrence of D. suweonensis and L. catesbeianus.

Dryophytes suweonensis Total
Absent Present
Lithobates catesbeianus Absent 52 (57.0) 105 (100.0) 157
Present 13 (8.0) 9 (14.0) 22
Total 65 114 179

The numbers in cells are the observed counts, and the numbers in parentheses are the expected counts.