Determine the least squares line for the data points in Exercises 15-18. (Hint: Note that the same pseudoinverse is involved for each set of data.) (1, 21), (2, 17), (3, 12), (4, 7)

MGF 1107 Pre-Class Assignment 3A Read through section 3A in your book and answer the following questions. 1) After your amazing score on your second exam, your average in my class goes from an 82 to an 87. a) What is the absolute change in your average 5 b) Why does it make sense that your answer to (a) is positive You went up by 5 points, 87-82=5 c) In what scenario would the absolute change in your average be negative If your new value is less than your reference value, then the absolute value would be negative d) What reference value would you use to find the relative change in your average 82 would be the reference value you’d use