4.10 Example #1: Compare Actual Data to Predicted Data

Third, are the actual data different from what we predicted? No. The treatment data look just like a continuation of the baseline data. So, for this graph, the answer is no, the data are not different and there is no basic effect.

An Extend Line graph visualizing the contrast between baseline and treatment during the Treatment Phase.
The treatment data are NOT DIFFERENT than what we expected. This is NOT a basic effect.

Are the actual treatment data DIFFERENT than what you would have predicted, given the baseline data?

Estimate the baseline slope

Extend that line into the treatment phase

Evaluate whether the slope or level of the actual treatment data are different from what you predicted

Post a comment
This section is for the civil and public discussion of the content of this page. We reserve the right to moderate and remove comments that are irrelevant, disrespectful, hateful, harassing, threatening, or spamlike. If you are experiencing a technical issue, please contact our helpdesk for assistance.

Leave a Comment