Answer:
A
Step-by-step explanation:
is the standard deviation of x.
The standard deviation is gotten by:
1. find the average of x-values (add up all the values and divide by number of numbers, which is 5)
2. subtract the average, x bar, from each of the values, square it, and add up the difference
3. Divide that final answer by n, which is 5
4. Take the square root of the answer
<em>Now, let's find the average (x bar):</em>
<em>x bar = </em>
<em />
<em>Doing steps 2 & 3 together:</em>
<em></em>
<em />
<em>Doing step 4:</em>
<em></em>
<em />
Correct answer is A
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