Question

Derrick just got home from playing soccer on a muddy field. He is curious how different brands of laundry detergent compare in removing mud from clothes, so he sets up an experiment.

In one laundry load, he puts his muddy socks with Brand A detergent. In the next load, he puts his muddy jersey with Brand B detergent. In the final load, he puts his muddy shorts with Brand C detergent.

Afterward, he noticed that the jersey came out the cleanest. He concludes that Brand B is the best detergent for removing mud from clothes. Is his conclusion valid?

Answer 1

A. Yes; the experiment was set up correctly.

B. No; there were too many controls in the experiment.

C. No; there were too many variables in the experiment.

D. No; Derrick was biased toward Brand B.

Answer 2

*WILL GIVE MEDAL & FAN*

Answer 3

@Hero @Australopithecus @AaronAndyson

Answer 4

What do you think the answer is and why?

Answer 5

@Compassionate @iambatman

Answer 6

An experimental control is something you use as a comparison to minimize the effects of other variables. A example of this is giving one crop of plants fertilizer. Then as a control you have a crop that is given no fertilizer. In this way you can tell what growth is from the fertilizer and what growth is not.

For an experiment to mean anything you want to minimizing effects outside what you are trying to measure.

Do you think he conducted this experiment in manner in which the results he obtained are credible. Did he make an effort to make sure all tests conducted were uniform?

Answer 7

it was C

Answer 8

Yeah I know

Answer 9

YOU JUST GOT CASH, THROW SOME MO, THROW SOME MO, THROW SOME MO, THE MORE YOU SPEND IT, THE FAST IT GO

Answer 10

xD

Answer 11

The reason it is C is because he didn't wash the same materials, they would also have different levels of dirt likely (he didnt control for it) on them so it brings the whole experiment into question.

Answer 12

Too many variables to account for