To display data on the color of cars, a bar graph is more suitable since it effectively represents categorical data. Percentile ranks, like the 80th for math and 76th for reading, indicate that the student has outscored 80% and 76% of her peers, respectively.
The question pertains to selecting the appropriate graphical representation for a given dataset. When dealing with data on the color of cars driven by students, which is categorical, a bar graph is a suitable choice. A bar graph displays categories on one axis and the frequencies or counts on the other, with the length of each bar representing the count of each category, making it ideal for summarizing categorical data such as car colors.
Understanding percentiles is crucial when interpreting test scores. If your daughter scored in the 80th percentile in math and the 76th percentile in reading, this means she performed as well as or better than 80% of the students in math and 76% of the students in reading for her grade level, indicating a strong performance in these subjects.