Calculate the "averages" for central tendency (mean, median, mode, and midrange) as well as the "variability" (range, variance, and standard deviation) of the data below by using the formulas. All work is to be hand-written. A calculator may be used to help with the arithmetic, but you must show the formula, evaluate the formula (substitution), show some supporting work, then indicate your final answer (circle, box, or highlight).

Number of Walk-In Patients at a Medical Care Facility

87 72 88 86 90 74 78 88 86 77 75 73 85 84 77 77 76 78 85 80 90 88 91 80 88 80 84 80 84 89 84 75 77 74 89 74 79 75 75 77