Final answer:
Pamela's picture graph is accurate as it properly represents 66 students with 3 glasses, with each glass symbolizing 2 students, totaling to 6.
Step-by-step explanation:
The question asked is about the correctness of a picture graph that Pamela made. According to the information provided, Pamela represented 66 students using 3 glasses in the graph where each glass stands for 2 students. To determine whether the picture graph is accurate, we must calculate the total number of students that the glasses should represent.
Given that each glass represents 2 students, 3 glasses would represent 3 times 2, which equals 6 students. Therefore, Pamela's approach for this data representation is indeed correct since the picture graph visually communicates that 3 glasses are equal to 6 students.