Nina wants to put color tiles on a square. 3 color tiles fit across the top of the square. how many rows and columns of square will nina need? how many color tiles will she use in all?

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Whats the name of the vertical axis

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?