For those looking for the link to the PsychSim module on Descriptive Statistics, here you go: PsychSim 5. Click on "Descriptive Statistics" to launch the module.Also, if you are looking for Standard Deviation calculators online (because you have a bunch of data laying around that needs analyzing), there are plenty available. Calculating standard deviation is one of those mathematical tasks that proves calculators are your friends, of course.
You can just do a Google Search for "Standard Deviation Calculator" but my favorite is Statiscope because you can watch the distribution graph change as each score is added.
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