Question

the line plot shows how many siblings each student has. how many more students have only one sibling than at least 3 siblings
                x                                      
                x        x                         
                x        x                           
       x       x        x        x                    
       x       x        x        x       x              
       x       x        x        x       x      
<----l-------l--------l-------l-------l--->

Answer 1

So for this you must ignore the student with 2. 


then you see how many in order

1-6 siblings
1-5 siblings
2-3 siblings

add up the left coulumn to get 4 people have more than 3 siblings