Assignment 3 Unit 2, through Measures of Spread 3 8:58 Collaborate as needed. Submit your own copy of your own work. Show your work for full credit, even if it only means telling us what calculator function(s) you used. 1. Consider the following test score data: 65 82 97 51 85 86 86 87 67 72 79 78 92 78 82 83 88 78 81 88 Use your calculator to calculate the a. mean. b. median. c. mode (try making a dotplot to find it): d. sample standard deviation. e. range. Now suppose the observation of 51 was incorrectly recorded- it should have been 71. Make the change, and calculate the new mean and median. Why does the median remain unchanged, yet the mean increases? Matthew Jones. Unauthorized use including distribution or reproduction prohibited.