Sorry if im asking too much im not the best with math/ it's not my best subject
1 answer:
Find the mean:
6 + 6 +10 + 8 + 10 +8 = 48
48 / 6 = 8
The mean is 8.
Now for each number, subtract the mean and square the result:
6 -8 = -2, -2^2 = 4
6 – 8 = -2, -2^2 = 4
10 – 8 = 2, 2^2 = 4
8 – 8 = 0, 0^2 = 0
10 – 8 = 2, 2^2 = 4
8 – 8 = 0, 0^2 = 0
Now find the mean of those results:
4 + 4 +4 +0 +4 + 0 = 16
16 / 6 = 2.6666
Now find the square root:
SQRT(2.666) = 1.63
The answer is A.
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