1. Consider a data set of happiness ratings on a scale of 1-200 {180, 50, 140, 30, 60, 130, 70, 70, 110, 70} find the: a) Mean b) Median c) Mode d) Range 2. Now assume the same data set is a sample. Find the... a) Variance b) Standard deviation 3. Now assume the same data set is a population. Find the: a) Variance b) Standard deviation 4. Consider this sample of widths in centimeters {17.3, 16.3, 16.7, 17.2, 17.9, 16.2, 15.9, 16.6, 16.7, 17.1} find the: a) Variance b) Standard deviation