Professor Very Busy needs to allocate time next week to include time for office hours. He needs to forecast the number of students who will seek appointments. He has gathered the following data:
week #students
6 weeks ago 83
5 weeks ago 110
4weeks ago 95
3weeks ago 80
2weeks ago 65
Last week 50
What is this week's forecast using the least squares trend line for these data? (show me the detail)