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Deviation: The standard deviation in exam scores. Maximum: The maximum value for exam score.Minimum: The minimum value for exam score.
#STATISTICAL CALCULATIONS IN SPSS HOW TO#
Here is how to interpret the numbers in this table for the variable score: Once you click OK, a table will appear that displays the following descriptive statistics for each variable: If you’d like, you can click the Options button and select the specific descriptive statistics you’d like SPSS to calculate. In the new window that pops up, drag each of the four variables into the box labelled Variable(s). To calculate summary statistics for each variable, click the Analyze tab, then Descriptive Statistics, then Descriptives: Here is how to calculate descriptive statistics for each of these four variables: Summary Statistics Suppose we have the following dataset that contains four variables for 20 students in a certain class: This tutorial explains how to calculate descriptive statistics for variables in SPSS. One example is a frequency table, which tells us how many data values fall within certain ranges.ģ. Tables – Tables can help us understand how data is distributed. Examples include the mean, median, standard deviation, and range.Ģ. Summary statistics – Numbers that summarize a variable using a single number. There are three common forms of descriptive statistics:ġ. You should now be familiar with one method for calculating the mean and standard deviation within the SPSS statistics package.Ĭheck out our YouTube channel for video tutorials, including this tutorial that shows you step-by-step how to calculate the mean and standard deviation in SPSS.The best way to understand a dataset is to calculate descriptive statistics for the variables within the dataset. The SPSS output viewer will appear with the following result (though, of course, the result will be different according to the data you enter).Īs you can see, the values for the mean and standard deviation appear next to the value for N (which is the number of items in your dataset). Press Continue, and then press OK in the Descriptives dialog box. deviation (and if you wish you can choose additional measures – e.g., Skewness).
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Now choose Options, and select Mean and Std.
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This can be done by selecting it on the left, and then clicking the blue arrow button. You need to get the variable for which you want to know the mean and standard deviation into the variables box on the right (as per the image above). This will open up the following dialog box. To calculate the mean and standard deviation, choose Analyze -> Descriptive Statistics -> Descriptives, as below. In other words, you want to know the average time it took to do the task, and how much the times vary – their spread. You want to find out the mean and standard deviation of the duration variable. We’re working on the assumption that you have already imported your data into SPSS, and you’re looking at something a bit like this (though obviously with different variables, figures, etc).Īs you can see, we’ve got three variables: (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. There are a number of different ways to achieve this, but what follows is probably the easiest. Result will appear in the SPSS output viewer.Click Options, and select Mean and Standard Deviation.Drag the variable of interest from the left into the Variables box on the right.Click Analyze -> Descriptive Statistics -> Descriptives.