Final answer:
Without seeing the bar graph Sarah created, we can't verify if it was done correctly. A pie chart is better for illustrating percentages, while a bar graph is ideal for comparing absolute numbers and showcasing the differences between categories.
Step-by-step explanation:
When determining whether Sarah created the bar graph correctly, we lack sufficient information to render a judgment. Hence, the appropriate choice in this case would be “I'm not sure” because we have not been provided with the actual bar graph that Sarah created.
Regarding which type of display would be best to analyze these data, it is context-dependent. If we wish to show the percentage of students that fall into each category, such as “Hours Played,” a pie chart would be most suitable. It visually represents parts of a whole, and it is easier for viewers to grasp the proportions at a glance.
If, however, the goal is to emphasize the total number of students in each category or to compare different categories side by side, a bar graph is more desirable. A bar graph effectively illustrates comparisons between different groups and is advantageous when there are numerous categories, or when precision in understanding the magnitude of differences is important. The bars provide a clear visual representation of the data, making it easy to compare the sizes of different categories.