Answer the following questions using this database. 1- Display the data in the d
ID: 3182230 • Letter: A
Question
Answer the following questions using this database.
1- Display the data in the delivery speed (Del speed) and service (Service) data in the form a run chart and comment.
2- Comment on the shape of the distribution of all variables.
3- Display and comment on the stem-and-leaf of each variable.
4- What would be two issues in making a direct comparison on the statistics of each variable?
Obs
Del speed
Price level
Price flex
Image
Service
Sales image
Prod quality
1
4.1
0.6
6.9
4.7
2.4
2.3
5.2
2
1.8
3
6.3
6.6
2.5
4
8.4
3
3.4
5.2
5.7
6
4.3
2.7
8.2
4
2.7
1
7.1
5.9
1.8
2.3
7.8
5
6
0.9
9.6
7.8
3.4
4.6
4.5
6
1.9
3.3
7.9
4.8
2.6
1.9
9.7
7
4.6
2.4
9.5
6.6
3.5
4.5
7.6
8
1.3
4.2
6.2
5.1
2.8
2.2
6.9
9
5.5
1.6
9.4
4.7
3.5
3
7.6
10
4
3.5
6.5
6
3.7
3.2
8.7
11
2.4
1.6
8.8
4.8
2
2.8
5.8
12
3.9
2.2
9.1
4.6
3
2.5
8.3
13
2.8
1.4
8.1
3.8
2.1
1.4
6.6
14
3.7
1.5
8.6
5.7
2.7
3.7
6.7
15
4.7
1.3
9.9
6.7
3
2.6
6.8
16
3.4
2
9.7
4.7
2.7
1.7
4.8
17
3.2
4.1
5.7
5.1
3.6
2.9
6.2
18
4.9
1.8
7.7
4.3
3.4
1.5
5.9
19
5.3
1.4
9.7
6.1
3.3
3.9
6.8
20
4.7
1.3
9.9
6.7
3
2.6
6.8
21
3.3
0.9
8.6
4
2.1
1.8
6.3
22
3.4
0.4
8.3
2.5
1.2
1.7
5.2
23
3
4
9.1
7.1
3.5
3.4
8.4
24
2.4
1.5
6.7
4.8
1.9
2.5
7.2
25
5.1
1.4
8.7
4.8
3.3
2.6
3.8
26
4.6
2.1
7.9
5.8
3.4
2.8
4.7
27
2.4
1.5
6.6
4.8
1.9
2.5
7.2
28
5.2
1.3
9.7
6.1
3.2
3.9
6.7
29
3.5
2.8
9.9
3.5
3.1
1.7
5.4
Obs
Del speed
Price level
Price flex
Image
Service
Sales image
Prod quality
1
4.1
0.6
6.9
4.7
2.4
2.3
5.2
2
1.8
3
6.3
6.6
2.5
4
8.4
3
3.4
5.2
5.7
6
4.3
2.7
8.2
4
2.7
1
7.1
5.9
1.8
2.3
7.8
5
6
0.9
9.6
7.8
3.4
4.6
4.5
6
1.9
3.3
7.9
4.8
2.6
1.9
9.7
7
4.6
2.4
9.5
6.6
3.5
4.5
7.6
8
1.3
4.2
6.2
5.1
2.8
2.2
6.9
9
5.5
1.6
9.4
4.7
3.5
3
7.6
10
4
3.5
6.5
6
3.7
3.2
8.7
11
2.4
1.6
8.8
4.8
2
2.8
5.8
12
3.9
2.2
9.1
4.6
3
2.5
8.3
13
2.8
1.4
8.1
3.8
2.1
1.4
6.6
14
3.7
1.5
8.6
5.7
2.7
3.7
6.7
15
4.7
1.3
9.9
6.7
3
2.6
6.8
16
3.4
2
9.7
4.7
2.7
1.7
4.8
17
3.2
4.1
5.7
5.1
3.6
2.9
6.2
18
4.9
1.8
7.7
4.3
3.4
1.5
5.9
19
5.3
1.4
9.7
6.1
3.3
3.9
6.8
20
4.7
1.3
9.9
6.7
3
2.6
6.8
21
3.3
0.9
8.6
4
2.1
1.8
6.3
22
3.4
0.4
8.3
2.5
1.2
1.7
5.2
23
3
4
9.1
7.1
3.5
3.4
8.4
24
2.4
1.5
6.7
4.8
1.9
2.5
7.2
25
5.1
1.4
8.7
4.8
3.3
2.6
3.8
26
4.6
2.1
7.9
5.8
3.4
2.8
4.7
27
2.4
1.5
6.6
4.8
1.9
2.5
7.2
28
5.2
1.3
9.7
6.1
3.2
3.9
6.7
29
3.5
2.8
9.9
3.5
3.1
1.7
5.4
Explanation / Answer
I can done all analysis in R
1,2,.
rm(list=ls(all=TRUE))
library(qicharts)
x=read.csv("Book1.csv")
Del=x[,2]
PL=x[,3]
PF=x[,4]
I=x[,5]
S=x[,6]
SI=x[,7]
PQ=x[,8]
par(mfrow=c(3,3))
qic(Del)
qic(S)
hist(Del)
hist(PL)
hist(PF)
hist(I)
hist(S)
hist(SI)
hist(PQ)
The central limit of Del is 3.5 and service is 3.
the shape of del speed is normal distributed
The shape of price level is right skewed
the shape of price flex is left skewed
the shape of image is right skewed
the shape of service is left skewed
the shape of prod quality is may be normal
3.
stem(Del)
The decimal point is at the |
1 | 3
1 | 89
2 | 444
2 | 78
3 | 023444
3 | 579
4 | 01
4 | 66779
5 | 123
5 | 5
6 | 0
stem(PL)
The decimal point is at the |
0 | 4
0 | 699
1 | 0333444
1 | 555668
2 | 0124
2 | 8
3 | 03
3 | 5
4 | 012
4 |
5 | 2
stem(PF)
The decimal point is at the |
5 | 77
6 | 23
6 | 5679
7 | 1
7 | 799
8 | 13
8 | 6678
9 | 114
9 | 56777999
stem(I)
The decimal point is at the |
2 | 5
3 | 58
4 | 03677788888
5 | 11789
6 | 00116677
7 | 18
stem(S)
The decimal point is at the |
1 | 2
1 | 899
2 | 0114
2 | 56778
3 | 0001233444
3 | 55567
4 | 3
stem(SI)
The decimal point is at the |
1 | 4
1 | 577789
2 | 233
2 | 5556667889
3 | 024
3 | 799
4 | 0
4 | 56
stem(PQ)
The decimal point is at the |
3 | 8
4 | 578
5 | 22489
6 | 236778889
7 | 22668
8 | 23447
9 | 7
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.