The black capped chickadee Poecile atricapilla is a small songbird commonly found in the northern United States and Canada Chickadees often live in cooperative flocks using a complex language to communicate about food sources and predator threats In an experiment researchers recorded chickadee vocalizations in an aviary when the birds were presented with predators of various sizes The table contains data that represent the average number of D notes per chickadee warning call for each type of predator along with the predator wingspan in centimeters Predator Pygmy owl Saw whet owl Kestrel Merlin Cooper s Hawk Short eared owl Prairie falcon Gyrfalcon Peregrine falcon Red tailed hawk Great horned owl Great gray owl Rough legged hawk Predator wingspa n cm 31 2 38 8 57 6 60 6 80 6 89 2 109 9 115 1 120 0 120 0 120 4 132 2 138 0 Number of D notes per call 3 96 4 09 2 76 3 04 3 18 2 28 2 20 2 25 2 80 2 56 2 46 2 06 1 36 To access the complete data set click the link for your preferred software format CSV Excel JMP Mac TXT Minitab14 18 Minitab18 PC TXT R SPSS TI CrunchIt 1 C N Templeton E Greene and K Davis Allometry of alarm calls black capped chickadees encode information about predator size Science 308 2005 pp 1934 1937 O Macmillan Learning Plot the number of D notes per call response variable against the predator wingspan explanatory variable Choose the correct scatterplot Scatteplot of Number of 0 retes per cal vs Predator wingipan o Pa Scatteplot of Namber of D notes per call vs Predator wingspanjo Prawn Scept of Number of Dnatas per cal vs Predator wingioon jum Pa Scaterpol of Number of D netes per cal vs Predar wingipan janj G