1. The problem asks: How many students were surveyed based on the given bar chart showing the number of siblings and the frequency of students. 2. To find the total number of students surveyed, we sum the frequencies of all sibling categories. 3. The frequencies given are: - 0 siblings: 1 student - 1 sibling: 1 student - 2 siblings: 3 students - 3 siblings: 6 students - 4 siblings: 2 students - 5 siblings: 5 students 4. Using the formula for total frequency: $$\text{Total students} = \sum \text{frequency}$$ 5. Calculate the sum: $$1 + 1 + 3 + 6 + 2 + 5 = 18$$ 6. Therefore, the total number of students surveyed is $18$.