The median number of brothers and sisters is the middle value, after the data points have been ordered from lowest to highest. Remember that if there are an even number of data points, the median is one-half way between the middle two data points. In this case the numbers listed in order are: 0, 1, 2, 2, 2, 2, 3, 3, 4, 9. The middle most data points are 2 and 2, which makes the median 2.