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Given a sample data table of annual income from 20 people as follows
NO
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
DATA
|
51
|
45
|
50
|
43
|
46
|
55
|
25
|
44
|
60
|
51
|
15
|
44
|
23
|
67
|
56
|
55
|
48
|
42
|
40
|
50
|
By using excel, perform calculations related to variance, with a note: the data should not be copied, but must be retyped in excel
From the following statements, the correct statement is