Independent:

The different heights of females so that we may be able to see if any female could have the same proportions to the Barbie.

 

Dependent: 

The different measurements would change depending on the height of the female.

 

Controlled:

-  measured each part of the Barbie with the same string and centimetre ruler

- took each scale factor of a female’s height compared to the height of the Barbie.

-used the same scale factor for all Barbie’s measurements to determine the measurements of the female with that height.