Calculate the mean of the set of boys and girls below: boys 21, 18, 20, 16, 16, 22, 28, 24, 26

girls 13, 16, 15, 14, 15, 19, 22, 26, 12

A-boys: 21.22 girls: 16.89

b-boys, 21 girls, 15

c-boys 18.5 girls 17

d-boys 18.5 girls 15

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?