MS 150 Statistics Spring 2003 Quiz 3 • Name: ________________

For the following six graphs, determine whether the relationship is linear,non-linear, or random; and, if linear, determine whether it is positive or negative.
relationshipsq03 (3K)

  1. ______________________________
  2. ______________________________
  3. ______________________________
  4. ______________________________
  5. ______________________________
  6. ______________________________
Use the following data for this quiz
Year, where 1995 is year 0 (x) Number of students in nursing program (y)
044
228
418
63
  1. __________ Calculate the slope of the best fit (also known at least squares) line for the data.
  2. __________ Calculate the y-intercept of the best fit line.
  3. ______________ Is the correlation positive, negative, or neutral?
  4. _______ How many nurses were predicted to be in the program in 2000 (x=5)?
  5. _______ What year was the program predicted to have 12 nurses?
  6. _______ What year was the program predicted to have zero nurses?
  7. _______ How many nurses are predicted to be in the program by the best fit line in 2005?