This example shows analysis based on a more complex sample design. Suppose that every student belongs to a study group and that study groups are formed within each grade level. Each study group ...

Table 61.1 shows the total number of students in each grade. Table 61.1: Number of Students by Grade. Grade: Number of Students: 7: 1,824: 8: 1,025: 9: 1,151: ... title2 'Stratified Simple Random ...