A school contains students in grades 1, 2, 3, 4, 5, and 6. Grades 2, 3, 4, 5, and 6 all contain the same number of students, but there are twice this number in grade 1. If a student is selected at random from a list of all the students in the school, what is the probability that she will be in grade 3?

Chapter2 Notes --- Displaying and Describing Categorical Data The Three Rules of Data Analysis Make a picture. Make a picture. Make apicture. Pictures … • Reveal things that can’t be seen in a table of numbers. • Show important features and patterns in the data. • Provide an excellent means for reporting findings to others Summarizing a Categorical Variable Example: The following...