To turn off the "aggregated results" diagram after the survey, please follow the next steps:

Step 1: Choose a report, where you have a question with aggregated results, click

on the ⚙️ right side and choose the "Edit" option in a dropdown:

​Step 2: Open the "Respondents and Requests" section of this report and choose the question with Aggregated results. Click on "➕ Conditions"
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Step 3: Check the "Don't attach the chart with survey results" box