Question

Here are the commutes (in miles) for a group of six students. Find the standard deviation.
14.7 16.3 34.0 33.7 22.6 16.0

Answer 1

Do you have any questions?

Answer 2

Standard deviation is found when you have another value to compare it to
But, you can, on the other hand, find MAD

Answer 3

\[σ=\sqrt{\frac{ Σ(x-x̄)^{2} }{ n }}\]
for standard deviation σ

steps: 1. calculate the mean (add up all the values and divide by 6, since there are 6 values). this is your x bar value (x̄)
2. for the first value in the list (x = 14.7) calculate (x-x̄)^2. repeat this process for all the values in the list. sum the values, as indicated by Σ. The result is the numerator inside the radical.
3. Divide by n (n = 6, since there are 6 values)
4. Take the square root of the result.