Another group of students did an experiment to find out how the height at which a marble is dropped affects the size of impact crater formed. They filled a basin with flour and covered the surface with cocoa. They decided to change the marble size and the marble height each time. They measured the size of the craters. Conclusion: The marbles we dropped from higher heights made much bigger craters than the ones we dropped from lower heights. This is evidence that the farther the marbles falls, the bigger the crater is.

Is this a valid conclusion for these students to draw from the experiment they conducted? Why or why not?