a teacher wants to know how much she can predict a student reading level in a given school district. the table shows the grade and reading levels of eight student.
Grade Level 4.1 5.2 7.3 8.5 6.7 10.3 6.0 6.4
Reading Level 3.6 4.5 6.2 8.1 6.5 8.2 6.1 4.4
what percent of variation in the reading level can be explained by changes in the grade level?
74.7%
82.4%
86.6%
90.7%
