The accompanying data file shows the annual expenditures (Expenditures in $) for 100 Amazon Prime customers Click here for the Excel Data File a. Construct a boxplot for the annual expenditures variable. Does the boxplot suggest that outliers exist? No outliers exist. ○ An outlier exists in the upper part of the distribution. ○ An outlier exists in the lower part of the distribution. ○ Outliers exist in both the lower and upper part of the distribution. b-1. Use z-scores to determine if there are any outliers for the annual expenditures variable. Note: Round final answers to 2 decimal places. Negative amounts should be indicated by a minus sign. z-score for the smallest observation z-score for the largest observation 485.00 2,123.00

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

i really need help with question number 2

The accompanying data file shows the annual expenditures (Expenditures in $) for 100 Amazon Prime customers.
Click here for the Excel Data File
a. Construct a boxplot for the annual expenditures variable. Does the boxplot suggest that outliers exist?
O No outliers exist.
○ An outlier exists in the upper part of the distribution.
○ An outlier exists in the lower part of the distribution.
○ Outliers exist in both the lower and upper part of the distribution.
b-1. Use z-scores to determine if there are any outliers for the annual expenditures variable.
Note: Round final answers to 2 decimal places. Negative amounts should be indicated by a minus sign.
z-score for the smallest observation
z-score for the largest observation
485.00
2,123.00
Transcribed Image Text:The accompanying data file shows the annual expenditures (Expenditures in $) for 100 Amazon Prime customers. Click here for the Excel Data File a. Construct a boxplot for the annual expenditures variable. Does the boxplot suggest that outliers exist? O No outliers exist. ○ An outlier exists in the upper part of the distribution. ○ An outlier exists in the lower part of the distribution. ○ Outliers exist in both the lower and upper part of the distribution. b-1. Use z-scores to determine if there are any outliers for the annual expenditures variable. Note: Round final answers to 2 decimal places. Negative amounts should be indicated by a minus sign. z-score for the smallest observation z-score for the largest observation 485.00 2,123.00
Customer
Expenditures
1
1263
2
1082
·
3
1097
4
1161
5
1327
6
1114
7
586
8
1714
0
9
609
1
10
1286
2
11
1805
3
12
1390
4
13
1623
5
14
1430
6
15
1608
7
16
1605
8
17
1339
9
18
711
0
19
1190
1
20
1297
2
21
864
3
22
1353
4
23
1264
5
24
1168
6
25
1334
7
26
1699
8
27
1683
9
28
1611
0
29
2043
1
30
1133
2
31
767
3
32
651
4
33
1286
5
34
1714
6
35
935
7
36
1134
8
37
1177
9
38
908
0
39
1089
1
40
1601
2
41
959
3
42
1879
4
43
1528
5
44
1193
6
45
1225
7
46
1344
8
47
1002
9
48
1687
0
49
819
1
50
1465
2
51
1631
3
52
1982
4
53
984
5
54
1778
6
55
1598
7
56
1483
8
57
1251
9
58
1398
0
59
1274
1
60
1181
2
61
1190
3
62
1442
4
63
1427
5
64
710
6
65
603
7
66
956
8
67
848
9
68
485
0
69
1549
1
70
1735
2
71
1743
3
72
1649
4
73
1604
5
74
1234
6
75
1395
7
76
1336
8
77
1362
9
78
2123
0
79
1275
1
80
1239
2
81
1722
3
82
1568
4
83
1047
5
84
1714
6
85
1070
7
86
1205
8
87
1861
9
88
1660
0
89
1139
1
90
1578
2
91
1358
3
92
1520
4
93
925
5
94
844
6
95
1506
7
96
1119
8
97
867
9
98
1147
00
99
1549
01
100
1466
Transcribed Image Text:Customer Expenditures 1 1263 2 1082 · 3 1097 4 1161 5 1327 6 1114 7 586 8 1714 0 9 609 1 10 1286 2 11 1805 3 12 1390 4 13 1623 5 14 1430 6 15 1608 7 16 1605 8 17 1339 9 18 711 0 19 1190 1 20 1297 2 21 864 3 22 1353 4 23 1264 5 24 1168 6 25 1334 7 26 1699 8 27 1683 9 28 1611 0 29 2043 1 30 1133 2 31 767 3 32 651 4 33 1286 5 34 1714 6 35 935 7 36 1134 8 37 1177 9 38 908 0 39 1089 1 40 1601 2 41 959 3 42 1879 4 43 1528 5 44 1193 6 45 1225 7 46 1344 8 47 1002 9 48 1687 0 49 819 1 50 1465 2 51 1631 3 52 1982 4 53 984 5 54 1778 6 55 1598 7 56 1483 8 57 1251 9 58 1398 0 59 1274 1 60 1181 2 61 1190 3 62 1442 4 63 1427 5 64 710 6 65 603 7 66 956 8 67 848 9 68 485 0 69 1549 1 70 1735 2 71 1743 3 72 1649 4 73 1604 5 74 1234 6 75 1395 7 76 1336 8 77 1362 9 78 2123 0 79 1275 1 80 1239 2 81 1722 3 82 1568 4 83 1047 5 84 1714 6 85 1070 7 86 1205 8 87 1861 9 88 1660 0 89 1139 1 90 1578 2 91 1358 3 92 1520 4 93 925 5 94 844 6 95 1506 7 96 1119 8 97 867 9 98 1147 00 99 1549 01 100 1466
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 4 images

Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman