Ideally, we want to be able to show a measure of the spread of the data. In this case, we wish to have error bars that represent ± 1 standard deviations. To do this, we tick the Dispay error bars checkbox and then, under the -Error Bars Represent- area, we check the Standard deviation radio box, and in the Multiplier:, enter "1".
Published with written permission from SPSS Statistics, IBM Corporation.
Note: If you are creating your bar chart as part of carrying out inferential statistical tests (e.g., independent-samples t-test, paired-samples t-test, one-way ANOVA or repeated measures ANOVA), rather than just descriptive statistics, you may also want to include "confidence intervals". We explain why and show you how to do this in our enhanced content.
Click the button.
You will be presented with the following screen (showing the error bars added in the "Chart Preview Area"):
Published with written permission from SPSS Statistics, IBM Corporation.
We do not need to do anything in the following screen in this example. However, it does present some options which you might find useful. You can use the and to rearrange the order of the categories and the button to exclude a category. If you make a mistake and exclude a variable you later want to include, you can simply click the button in the Excluded: box.
Published with written permission from SPSS Statistics, IBM Corporation.
If you make any changes, remember to click the button.
We want to change the y-axis label so that we can remove the "mean" text and add in some units of measurement. We do this by selecting "Y-Axis (Bar1)" in the Edit Properties of: box and then change the Axis Label: as below:
Published with written permission from SPSS Statistics, IBM Corporation.
Click the button.
Click the button.
You will be presented with the following bar chart:
Published with written permission from SPSS Statistics, IBM Corporation.
Note: If you need help creating a clustered bar chart using SPSS Statistics, we show you how in our enhanced content.