Okay so think of it like this, You have the numbers 1,5,8,9,15. So you have the first "Whisker" and that stands for the lower observation which is 1. Then you have the first part of the box which is the firsrt quartile 5. The you have the middle of the box which is the median easy way to remember that is meddle middle, And the median is 8. Then you have your third quartile which 9. Then you have your greatest quartile, 15. And that is your box and whisker plot. Hope this helped!
