... average is simply the median (the middle number or the average of the two middle numbers if the number of terms is even). In other words, the mean and median of the set of numbers are the same. Faced ... to a set, and the average of the numbers in the set changes as a result, you can determine the value of the number that’s added byapplying the arithmetic-mean formula twice.17. The average of ... rule: The greater the data are spread away from the mean, the greater the standard deviation.21. Distribution A: {1, 2.5, 4, 5.5, 7}Distribution B: {1, 3, 4, 5, 7}Column AColumn B The standard...