Now, let's do the same as we did for the previous one here.

notice again, how did we get 84 for the 4th element's coefficient? well 36 * 7 / 3. and so on. And you can just expand it from there.
The answer to your question are <span>1.75</span>
The answer would be (The two ranges are close together, so there are probably no outliers in this set. )
2.645 lalalalalalalalalala