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Hire a WriterUsing an area proportion to z-value table, has a z-value equal to
But we know that,
Therefore, a 16th
percentile is equivalent to a score of 400.55
Percentile Rank
Student
Score
Nija
18
Ralph
16
Sara
15
Raphael, Michael, and Robin
13
Susannah
12
Tory and Mollie
11
Sam
10
Stanine Problems
Part A
Percentile Score
Z-score
Stanine
40
-0.2533
4
25
-0.6745
4
6
-1.5548
2
79
0.8064
7
90
1.2816
8
Part B
Question
Z-score Obtained
Stanine
1
1
7
2
1
7
3
1.75
4
0
5
5
6
3
Stanine for question 5
Composite
Z-value
600+600
5
700+500
7
3
800+400
9
1
650+550
6
3
670+530
6
4
760+440
8
2
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