The distribution center for an online retailer has been experiencing quite a few "pick errors" (i.e., retrieving the wrong item). Although the warehouse manager thinks most errors are due to inexperienced workers, she believes that a training program also may help to reduce them. Before sending all employees to training, she examines data from a pilot study of 30 employees. Information is collected on the employee's annual pick errors (Errors), experience (Exper in years), and whether or not the employee attended training (Train equals 1 if the employee attended training, O otherwise). The accompanying data file shows the results. Click here for the Excel Data File a. Construct a scatterplot of pick errors against experience. Given the scatterplot, which statement best describes the relationship between pick errors and experience? O Pick errors and experience have a somewhat positive (nonlinear) relationship. O Pick errors and experience have a somewhat negative (nonlinear) relationship. O Pick errors and experience have no relationship. O Pick errors and experience have an inverted U-shaped (nonlinear) relationship. b. Construct a scatterplot of pick errors against experience that also incorporates the Train variable (categorical). Which of the following statements best describes the relationship between pick errors, experience, and training? O Trained employees have relatively more pick errors and less experience compared to untrained employees. O Trained employees have relatively less pick errors and more experience compared to untrained employees. O There is no relationship between pick errors, experience, and training. O There is a positive relationship between pick errors and experience for both trained and untrained employees. A B C 1 Employee Errors Exper Train 2 1 13 9 ° 23 27 О 4 312 6 о 5 49 20 0 6 5 10 9 ° 7 66 26 0 8 739 4 0 9 8 12 10 0 10 96 28 0 11 10 65 2 0 12 11 5 17 ° 13 12 44 1 0 14 13 21 8 0 15 14 73 2 0 16 15 28 5 0 17 16 3 29 1 18 17 6 17 1 19 18 3 23 1 20 19 4 20 1 21 20 4 17 1 22 21 2 23 1 23 22 3 27 1 24 23 3 23 1 25 24 1 24 1 26 25 29 1 1 27 26 3 25 1 28 27 3 14 1 29 28 4 21 1 30 29 14 2 1 31 30 4 24 1 32 33
The distribution center for an online retailer has been experiencing quite a few "pick errors" (i.e., retrieving the wrong item). Although the warehouse manager thinks most errors are due to inexperienced workers, she believes that a training program also may help to reduce them. Before sending all employees to training, she examines data from a pilot study of 30 employees. Information is collected on the employee's annual pick errors (Errors), experience (Exper in years), and whether or not the employee attended training (Train equals 1 if the employee attended training, O otherwise). The accompanying data file shows the results. Click here for the Excel Data File a. Construct a scatterplot of pick errors against experience. Given the scatterplot, which statement best describes the relationship between pick errors and experience? O Pick errors and experience have a somewhat positive (nonlinear) relationship. O Pick errors and experience have a somewhat negative (nonlinear) relationship. O Pick errors and experience have no relationship. O Pick errors and experience have an inverted U-shaped (nonlinear) relationship. b. Construct a scatterplot of pick errors against experience that also incorporates the Train variable (categorical). Which of the following statements best describes the relationship between pick errors, experience, and training? O Trained employees have relatively more pick errors and less experience compared to untrained employees. O Trained employees have relatively less pick errors and more experience compared to untrained employees. O There is no relationship between pick errors, experience, and training. O There is a positive relationship between pick errors and experience for both trained and untrained employees. A B C 1 Employee Errors Exper Train 2 1 13 9 ° 23 27 О 4 312 6 о 5 49 20 0 6 5 10 9 ° 7 66 26 0 8 739 4 0 9 8 12 10 0 10 96 28 0 11 10 65 2 0 12 11 5 17 ° 13 12 44 1 0 14 13 21 8 0 15 14 73 2 0 16 15 28 5 0 17 16 3 29 1 18 17 6 17 1 19 18 3 23 1 20 19 4 20 1 21 20 4 17 1 22 21 2 23 1 23 22 3 27 1 24 23 3 23 1 25 24 1 24 1 26 25 29 1 1 27 26 3 25 1 28 27 3 14 1 29 28 4 21 1 30 29 14 2 1 31 30 4 24 1 32 33
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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Transcribed Image Text:The distribution center for an online retailer has been experiencing quite a few "pick errors" (i.e., retrieving the wrong item). Although
the warehouse manager thinks most errors are due to inexperienced workers, she believes that a training program also may help to
reduce them. Before sending all employees to training, she examines data from a pilot study of 30 employees. Information is collected
on the employee's annual pick errors (Errors), experience (Exper in years), and whether or not the employee attended training (Train
equals 1 if the employee attended training, O otherwise). The accompanying data file shows the results.
Click here for the Excel Data File
a. Construct a scatterplot of pick errors against experience. Given the scatterplot, which statement best describes the relationship
between pick errors and experience?
O Pick errors and experience have a somewhat positive (nonlinear) relationship.
O Pick errors and experience have a somewhat negative (nonlinear) relationship.
O Pick errors and experience have no relationship.
O Pick errors and experience have an inverted U-shaped (nonlinear) relationship.
b. Construct a scatterplot of pick errors against experience that also incorporates the Train variable (categorical). Which of the
following statements best describes the relationship between pick errors, experience, and training?
O Trained employees have relatively more pick errors and less experience compared to untrained employees.
O Trained employees have relatively less pick errors and more experience compared to untrained employees.
O There is no relationship between pick errors, experience, and training.
O There is a positive relationship between pick errors and experience for both trained and untrained employees.
A
B
C
1 Employee Errors
Exper
Train
2
1 13
9
°
23
27
О
4
312
6
о
5
49
20
0
6
5 10
9
°
7
66
26
0
8
739
4
0
9
8 12
10
0
10
96
28
0
11
10 65
2
0
12
11 5
17
°
13
12 44
1
0
14
13 21
8
0
15
14 73
2
0
16
15 28
5
0
17
16 3
29
1
18
17 6
17
1
19
18 3
23
1
20
19 4
20
1
21
20 4
17
1
22
21 2
23
1
23
22 3
27
1
24
23
3
23
1
25
24 1
24
1
26
25 29
1
1
27
26 3
25
1
28
27 3
14
1
29
28 4
21
1
30
29 14
2
1
31
30 4
24
1
32
33
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