Maris conducted a study on the effect that playing video games has on memory recall. The next example illustrates the location of the median and the value of the median. The upper case letter M is often used to represent the median. The location of the median and the value of the median are not the same. The median occurs midway between the 50 th and 51 st values. If the total number of data values is 100, then. The median is the 49 th value in the ordered data. If n is an even number, the median is equal to the two middle values added together and divided by two after the data has been ordered.įor example, if the total number of data values is 97, then = 49. If n is an odd number, the median is the middle value of the ordered data (ordered smallest to largest). The letter n is the total number of data values in the sample. Remember that this function simply tells you where to look for the median, not the actual value itself.
In many cases, especially for larger datasets you may choose to use the location function of the median rather than the traditional counting method. The median is generally a better measure of the center when there are extreme values or outliers because it is more robust, or not affected by the precise numerical values of those outliers.
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