What are the correct labels for the variables in the bar chart?

[Orion78]

I need to drag and drop all the labels into the relevant boxes by the bar chart. Three spaces will be left empty because there is anything to describe them. (See the attachment)
I was thinking:

title
empty
empty
smalles difference between ...
empty
independent variable
dependent variable
longest mean ...

Only six of those answers are right but I cannot decide which one are wrong. Can anyone could give me any hints? Thanks

 

[WillemBouwer]

Your independent variables are normally the y-axis, that could be the one you have wrong, should not be your 6th entry... Know I can't just give the answer, but it is difficult to explain it any other way, haha...