3 years ago

Which of the choices is the standard deviation of the sample shown here?

2 answers:

6 0

Mean = (19 + 20 + 21 + 22 + 23)/5 = 105/5 = 21
x x - mean (x - mean)^2
19     -2 4
20    -1 1
21 0 0
22 1 1
23 2 4
       Sum = 10

Standard deviation = sqrt(sum(x - mean)^2 /n) = sqrt(10/5) = sqrt(2)

kati45 [8]3 years ago

5 0

Answer:

C for apex

Step-by-step explanation:

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