Table 1. Dataset A. Index of Records Rain No No No No Yes No No Yes Sprinkler No Yes Grass Wet Yes No Yes Wet Wet Wet Yes Wet 10 12 13 14 15 16 No Yes No No No Yes No Yes No No No Yes No No Wet Wet Suppose David collects another dataset during 2016. Table 2. Dataset B Grass Wet Dry Sprinkler No No Yes Yes Yes Yes No No Yes No Index of Records No No No No Yes No No Yes No No Wet Dry Dry Wet 10 Table 1. Dataset A. Index of Records Rain No No No No Yes No No Yes Sprinkler No Yes Grass Wet Yes No Yes Wet Wet Wet Yes Wet 10 12 13 14 15 16 No Yes No No No Yes No Yes No No No Yes No No Wet Wet Suppose David collects another dataset during 2016. Table 2. Dataset B Grass Wet Dry Sprinkler No No Yes Yes Yes Yes No No Yes No Index of Records No No No No Yes No No Yes No No Wet Dry Dry Wet 10