To round off to 10, the difference should range from 5 to 14. If the difference between two numbers is from 5 to 14, they all are rounded to 10.
Example:
(near to 10)



a and c i think
the blue circle is all the people who had brothers one name was in the blue circle so one person had a brother but the in between part of the too circles are who had both a brother and a sister so the is one name in the between purple so you count that one to for brother and for sisters
there were 2 people that had brother
and four people that had sisters
and one that had both
Because the discriminant is less than zero, there are no real solutions in the equation.
Answer:
yes you hrlp me thank you so much
A box plot is something like this....: http://prntscr.com/jeao6q If you follow that example, you should be able to create one.
Hope this helps!