study of speed dating, female subjects were asked to rate the attractiveness of their male dates, and a sample of the results is listed below (1=not attractive; 10=extremely attractive). Find the range, variance, and standard deviation for the given sample data. Can the results be used to describe the variation among attractiveness ratings for the population of adult males? 7 1 9 6 4 6 7 8 2 2 2 10 4 5 5 3 3 2 8 2 1 7 8 4 4 9