Solution:
Given the table below:
From the table,
[tex]\begin{gathered} Number\text{ of seventh graders = 27} \\ Number\text{ of eighth graders = 23} \end{gathered}[/tex]
Since there are more seventh-graders than eighth-graders, we can evaluate the number of more seventh-graders by subtracting the number of eighth-graders from the number of seventh-graders.
Thus, we have
[tex]\begin{gathered} 27-23 \\ =4 \end{gathered}[/tex]
Hence, Julie surveyed 4 more seventh-graders than eighth-graders.
