Asked by Christine
Can you tell me the z score for the following numbers?
10, 12, 16, 18, 19, 21.
Thanks, I am getting the wrong answer each time I do it.
10, 12, 16, 18, 19, 21.
Thanks, I am getting the wrong answer each time I do it.
Answers
Answered by
Damon
mean = sum/6 = 96/6 = 16
10 - 16 = -6
12 - 16 = -4
16 - 16 = 0
18 - 16 = 2
19 - 16 = 3
21 - 16 = 5
n-1 = 5
s^2 = (1/5)(36 + 16 + 0 + 4 + 9 + 25)
s^2 = (1/5)(90)
s = 3 sqrt 2 = 4.24
-6/4.24 = -1.42
-4/4.24 = -0.94
0/4.24 etc
10 - 16 = -6
12 - 16 = -4
16 - 16 = 0
18 - 16 = 2
19 - 16 = 3
21 - 16 = 5
n-1 = 5
s^2 = (1/5)(36 + 16 + 0 + 4 + 9 + 25)
s^2 = (1/5)(90)
s = 3 sqrt 2 = 4.24
-6/4.24 = -1.42
-4/4.24 = -0.94
0/4.24 etc
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