The following frequency distribution summarizes the weights of 195 fish caught by anglers participating in a professional bass fishing tournament. Weight (Pounds) Frequency 1-3 23 4-6 68 7-9 24 10-12 80 (a) Calculate the (approximate) sample mean for these data. (Round your answer to 2 decimal places.) lbs (b) Calculate the (approximate) sample variance for these data. (Round your answer to 3 decimal places.) < Prev 8 of 9 Next >