Abigail surveys students in different grades, and asks each student which pet they prefer.[br][br]Record the responses in the table below.[br][br]What is the marginal frequency of each type of pet?

[list=1][br][*]Sum the responses of people with each characteristic for the first pet type, “bird.”[br][*]Sum the responses of people with each characteristic for the first pet type, “cat.”[br][*]Sum the responses of people with each characteristic for the first pet type, “dog.”[br][*]Sum the responses of people with each characteristic for the first pet type, “fish.”[br][*]Organize the marginal frequencies in a two-way frequency table. Create a row and include the marginal frequencies of each response under the name of each response.[br][/list]