1. In each case, is the data single-variable or two-variable? a) Data comparing the area of a house and the cost of building materials b) Data on the frequencies of the houses sold each month over one year 2. What the difference between a histogram and a bar graph? Give an example of variable(s) that would be best analyzed by each type. 3. Given the following scatter plots, estimate the "r" value and indicate if the circled point is an outlier or an influential point a) influential/outlier/neither b) 100 75 50 25 influential/outlier/neither ° influential/outlier/neither 4. Here are the shoe sizes for the female students in a class: 5, 5, 6.5, 7, 8, 8.5, 9, 9.5, 10, 10.5, 11.5, 11.5, 12.5 Ashley has a shoe size in the 40th percentile for this group. What is Ashley's shoe size?