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
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
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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
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
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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
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1205
8
87
1861
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1660
0
89
1139
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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
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