A researcher at a large company has collected data on both the beginning salary and the current salary of 48 randomly selected employees. The least‑squares regression equation for predicting their current salary from their beginning salary is ^ y = − 2532.7 + 2.12 x y^=−2532.7+2.12x . Kathy Jones started working for the company earning $19,000. She currently earns $40,000. What is the residual for Ms. Jones?

Which of the following expressions are equivalent ?

Two language majors, anna and megan, took exams in two languages. anna scored 85 on both exams. megan scored 74 on the first exam and 85 on the second exam. overall, student scores on the first exam had a mean of 82 and a standard deviation of 4, and the second exam scores had a mean of 71 and a standard deviation of 13. a) to qualify for language honors, a major must maintain at least an 85 average across all language courses taken. so far, which of anna and megan qualify? b) which student's overall performance was better?

Lindsay used two points, (x, y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?