Lauryn wants to analyze the weights of the dogs for people that own that animal in her class. She records the following weights in a class survey: 28, 61, 17, 42, 37, 37, 22, 40, 13, 14, 33, 41, 25 If she chooses the intervals to be 0-15; 16-30; 31-45; 46-60; 61-75, which interval has the highest frequency? ​