The following data are the amounts of total fat (in grams) in all sweet treats available at your local donut shop. 21 22 15 16 25 16 19 19 18 16 Are these population or sample data? Select an answer What is the range for this data set? What is the variance for this data set? Round your answer to three decimal places, if necessary. What is the standard deviation for this data set? Round your answer to three decimal places, if necessary.