What is the mean absolute deviation for the data set? {20, 24, 12, 44, 68} 16.81 17.04 17.52 17.92

What is the range for 31,39,29,34,37,24,36,33,34,28

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265