Whistling dolphins. Marine scientists who study dolphin communication have discovered that bottlenose dolphins exhibit an individualized whistle contour known as their signature whistle. A study was conducted to categorize the signature whistles of 10 captive adult bottlenose dolphins in socially interactive contexts (Ethology, July 1995). A total of 185 whistles was recorded during the study period; each whistle contour was analyzed and assigned to a category by a contour similarity (CS) technique. Use a graphical method to summarize the results. Do you detect any patterns in the data that might be helpful to marine scientists? Whistle Category Number of Whistles
Type a 97
Type b 15
Type c 9
Type d 7
Type e 7
Type f 2
Type g 2
Type h 2
Type i 2
Type j 4
Type k 13
Other types 25