There are three numbers to the left of 15, and three numbers to the right, therefore the median is 15.
Related Content. That's fine. Put the numbers in the data set in order by value, from lowest to highest. The median often gives a more accurate representation of the data set than simply finding the average or mean might. It's inevitable. Each number counts separately, no matter how many times it's repeated. Deb Russell is a school principal who has taught mathematics at all levels.
If the sum of the two middle numbers is an odd number, dividing it by 2 will leave you with a mixed number x. She is also a freelance writer with more than 14 years of experience.
For example: Wondering what good knowing the median is, anyway? About the Author This article was written by a professional writer, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To calculate it, place all of your numbers in increasing order.
In word problems, the data set may represent things like the ages of a group of children or the numerical scores of a class on a math test. First, find the two middle integers in your list. Depending on which text editor you're pasting into, you might have to add the italics to the site name. And no, the textbook isn't looking for that concrete strip running down the center of a divided highway! This is the group of numbers for which you're asked to find the median.
Of course, it's easy to find the exact middle when the data set contains an odd number, as the example does. Tip Remember that it doesn't matter if numbers are repeated in a data set. How to Find the Range of Numbers.
Unlike the median and mean, the mode is about the frequency of occurrence. Look for the number that falls in the exact middle of the data set once the numbers are ordered by value. The data set can include any amount of numbers. Add them together, then divide by two.