The following data show the number of hours spent watching television for 10 randomly selected freshmen attending a liberal arts college in the midwest. hours of television viewed weekly 12 17 19 15 12 18 11 15 12 12 calculate the range, variance, standard deviation, and interquartile range for the sample data. the range for the data set is nothing. (type an integer or a decimal. do not round.) the sample variance, s squared, is nothing. (round to two decimal places as needed.)