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Table 1 ANOVA testing for non-transitive competitive interactions. Sample refers to the 21 population samples taken from generations 0, 1,000, 2,000, ..., and 20,000. Clone refers to the 5 neutrally marked clones from generations 0, 5,000, 10,000, 15,000, and 20,000. Each sample competed against each clone with 3-fold replication. The sample-by-clone interaction is used to test for any deviations from the transitive model.

From: Long-term experimental evolution in Escherichia coli. XI. Rejection of non-transitive interactions as cause of declining rate of adaptation

Source DF SS MS F P
Sample 20 5.095 0.2548 49.50 < 0.0001
Clone 4 14.37 3.593 698.1 < 0.0001
Interaction 80 0.3290 0.004112 0.7990 0.8763
Residual 210 1.081 0.005147 --- ---