3.42 Detecting a Change in Slope with Greater Variability

Now you’ll practice with graphs that have higher variability. Remember, you want to look at each phase and judge whether there is a slope in that phase that you can see above and beyond that variability. Let’s look at an example. You’ve been collecting baseline data on a student’s talk outs during science class. There’s a slight increasing slope in baseline. If you don’t implement an intervention, you would predict that the behavior would continue on this path.

A graph detecting the change in slope between baseline and treatment, indicating variability.
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