The following refer to the following data set: 21 66 51 90 31 82 46 45 98 82 71 Find the following measures of center for this sample: = (Report your answer for a rounded to one decimal place.) m = mode = Hint: The homework video explains what the x and m symbols stand for and use your calculator following the instructions in the 'how to use your ti84 to find the measures of center and spread' video to find the answers