Report Number of Observations Practice Test

A student council surveyed the school about cafeteria food preferences. They collected responses about favorite lunch items from different grade levels: 6th grade (45 responses), 7th grade (38 responses), and 8th grade (41 responses). However, when they reviewed the data, they found that 9 responses from 7th grade were duplicates where students had submitted the survey twice, and these duplicate entries needed to be removed to avoid counting the same student multiple times.