1234569∞ Crew Output 10 12 12 7 17 18 σ 19 10 2 12 14 82122 17 6699421 3456789 10 234565009 7 8 10 17 14 11 14 14 16 15 17 15 10 12

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A construction company manager is investigating the relationship between crew size (number of workers) and productivity (number of jobs completed per week). He collected data for both variables over the past 27 weeks. Crew_Size Polynomial Data file posted  has the data. Use the data file to answer the following questions:

A)Build linear and quadratic regression models to predict productivity based on crew size. Which
model is better and why?
B) Use the best-fitting model to predict the number of jobs completed per week for a crew of 5 for
a crew of 7.
c) Estimate a cubic regression model and compare it to the previous two models. Does the cubic
model improve over the quadratic regression model? Explain


1234569∞
Crew
Output
10
12
12
7
17
18
σ
19
10
2
12
14
82122
17
6699421
3456789
10
234565009
7
8
10
17
14
11
14
14
16
15
17
15
10
12
Transcribed Image Text:1234569∞ Crew Output 10 12 12 7 17 18 σ 19 10 2 12 14 82122 17 6699421 3456789 10 234565009 7 8 10 17 14 11 14 14 16 15 17 15 10 12
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