It’s probably worth noting that we’ve also selected Display frequency tables at the bottom on the left. You should now be looking at something like this. We’ve also selected Mean and Standard Deviation, just because these are standard measures of central tendency and dispersion (respectively). Here you just want to tick the Median option under Central Tendency on the right.
Once you’ve set this up, hit the Statistics button to bring up the Statistics dialog box. You can do this by dragging and dropping, or by selecting the variable on the left, and then clicking the arrow in the middle. You need to get the variable for which you wish to calculate the median into the Variable(s) box on the right. This will bring up the Frequencies dialog box. This is probably the easiest.Ĭlick Analyze -> Descriptive Statistics -> Frequencies.
There are a number of different ways of calculating the median in SPSS. In other words, you want to know the duration in seconds that lies exactly at the midpoint of the distribution of all durations. You want to find out the median of the duration variable. So we’ve got three variables here: (a) duration – which is the duration in seconds it takes to complete a certain task (b) sex – male or female and (c) height – in inches. This is the data set with which we’re going to be working.
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