Respuesta :

warriorprincess19

Answer:

18:repeat the experiment again

Explanation:

Because repeating the experiment would get rid of inaccurate data

JayV2005

Question 17:

It is best to use a bar graph when comparing items.

Question 18:

it is best to always double check your experiments and make sure that everything you use is not different to the first experiment so, I would say that you should repeat the experiment.