Checkbox
The checkbox element is similar to Radio button, however, with the checkbox, the respondent can also select multiple answers.
To create a graph, you need to add all possible answers to the graph, and for each data series, filter the series to the corresponding answer. Set them to ‘Count’ as data calculation, and group the data against ‘All data’, to see how often an answer was selected overall. You can best use the column chart for this:
Export
When you export the results of the checkbox element every answer option will be a column header containing the question title and the answer option. The value per row in the column can either be true (answer selected), false (answer initially selected, but finally deselected), or empty (answer not selected).
The value false is equal to an empty/blank value. So it means that the answer was eventually not selected and submitted. However, initially, the answer was selected and the respondent progressed to the second page of the form. When progressing to the next page there is already a submission of the feedback given on the previous page. So the initial checkbox answer is submitted as selected true. However, if you return to the page with the checkbox question and unselect the given answer, we must update/undo the initial submitted answer. To do so the deselected answer is submitted as false.
In our feedback inbox the answers that eventually got updated with the value false are not shown. Our export however returns the raw data values and therefore contains the false values beside the empty/blank and true values.