Chapter 2 [Number Sense: Basic Computational skills and Benchmarks 7. Winging Out Some Computations Your wingspan is the distance from the tip of the middle nger on your left hand to the tip of the middle nger on your right, with your arms parallel to the ground. The wingspans of 10 hypothetical individuals are recorded in the table. a. What is the mean wingspan for this group of TABLE 23 7 ten persons. Person Wingspan (in) i. 65 1 70 ii. 67 2 63 iii. 67.2 3 72 iv. 70 4 67 5 65 b. What is the median wingspan for this group of 6 65 ten persons? 7 68 i. 65 8 64 ii. 67 9 67 iii. 67.2 10 71 iv. 70 c. What is the variance for this group of ten persons? :iiihiilli '_ a .. '5.\" '2 {he Numbers: A Student-Centered Approach for Learning Statistical Reasoning 35