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How to complete homework 3 numbers 7-10
18. Let t = 0 correspond to 1994
Year
Profit
1994
22.4
1996
24.6
1999
24.9
2000
26.1
2003
27.5
2005
28.5
2009
21.1
2010
22.4
Column
A
Column
B
0
2
5
6
9
11
15
16
22.4
24.6
24.9
26.1
27.5
28.5
21.1
22.4
Enter the top row in column A and two 2 in column B. Then create a list of points.
Be sure that the list is of ordered pairs.
Question 7 A. Linear regression model
Command : fitpoly[list1,1]
Question 8: G. 4th order polynomial regression model
Command; fitpoly[list1,4]
Leading coefficient is the number in front of
term.
9. R2 value for the 4th order polynomial regression model
Command: RSquare[list1,g]
answer: 0.8196
10. Use the quartic (4th order polynomial) regression model for problem 18 to predict the company’s profits in
2015.
Command; g(21)
Answer: 13.0335 millions of dollars