Q/ You have the following data that represent the grades of the students of the first stage (xi) and the fourth stage (yi) of the computer department: between the dispersion between those grades for the two stages using the coefficient of variation: *

yi | xi 65 70 60 81 72 62 90 91 95 95 81 68 Q/ You have the following data that represent the grades of the students of the first stage (xi) and the fourth stage (yi) of the computer department: between the dispersion between those grades for the two stages using the coefficient of variation: * 8:18 PM