Question

Carlos and Juan are trying to determine which type of soap solution will make the biggest bubbles. They are testing three different bubble solutions. They use 50 ml of each bubble solution and mix it with 100 ml of water. Both boys blow bubbles using their favorite wands. Carlos and Juan blow bubbles with each solution three times. They measure the width of each bubble blown and take an average of the three measurements.
Is this a valid experiment?

A) No, there were too many things being changed at a time.

B) Yes, they averaged the measurements.

C) Yes, they had multiple trials.

D) No, it does not give any data.

Answer 1

Yes they had multiple tries. But it depends how they recorded the data because they used different wands