A common statistic we need to know is how many of a given type of applicant showed up to an event. For instance, if the application branch types were Participant, Mentor, and Staff, then the output would be:
| branch |
hackgt |
workshop1 |
meal1 |
| Participant |
400 |
100 |
250 |
| Mentor |
50 |
3 |
45 |
| Staff |
50 |
3 |
45 |
| Total |
500 |
106 |
340 |