Question: Most of us have heard someone say that more intelligent people tend to do better in school. Is this always true? Experienced teachers know that it is only partly true. Students with higher IQ’s often do better schoolwork, but factors other than IQ can affect academic success. However, let’s see if there is a correlation between IQ and cumulative grade averages(CGA). the principal of Delta High School chose 12 students from the senior class at random and complied the data in the table given below.

Calculate the equation of the least squares regression line.