Augusto wants to prove to his parents that watching TV while he does his homework will help him get better grades. He decides to ask 20 of his friends if they watch TV while they do their homework and what their grades are. He finds that his friends who have high grades also watch TV while they do their homework. He tells his parents that he has proven that watching TV while doing homework will cause his grades to improve. What mistake has Augusto made?

Question

anonymous · Answer

The mistake he made was that he proved that his friends grade are better when they watch tv. Maybe the TV don't distract his friends as much

anonymous · Answer

A. He did not use a random sample, and he tried to show cause and effect with an observational study.
B. He did not use a random sample, and he tried to show cause and effect with an experiment.
C. He did not separate his friends into different groups, and he didn't apply a treatment.
D. He did not separate his friends into different groups, and he used a survey to collect data.

anonymous · Answer

Ohhh okay makes sense, so it would be A then right? @zoomiemoo

anonymous · Answer

@triciaal @phi @fashionbelle @unkownbeast911

anonymous · Answer

@firedupme @Vocaroo @sparrow2

anonymous · Answer

I would say maybe D. He did not separate his friends into different groups, and he used a survey to collect data.

anonymous · Answer

@Vocaroo Unfortunately D. was incorrect :(

triciaal · Answer

did all 20 of his friends have high grades?
what were the grades without TV?