Magnet investigation

This task is about investigating the strength of magnets.
Jay had 5 different magnets. She tested each magnet to see how many paperclips it could pick up.
This table shows how many paper clips each magnet picked up.
  
 

Magnet 1

Magnet 2

Magnet 3

Magnet 4

Magnet 5

Number of paper clips

5

4

7

1

4

 
a)
 
Draw a bar graph to show this information.


b)

i)

ii)


Which magnet is the strongest? ____________________

Why do you think this?