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Which method would be most statistically accurate for determining the average snowfall per state in the United States?

Marissa's Method

Allyson's Method

Mom's Method

Answer: Incorrect.

While Marissa does pick states from all four regions of the United States, her sample size is too small. It is not representative of the population.

Marissa is selecting the states, so the selection process is not random.

Also, not every state has a chance to be a part of her survey. Thus, her survey does not produce a simple random sample. Try again. Incorrect.

While Allyson is aware of the possible outliers that may form in the data collection, she is not realizing that there will be outliers in the northern states as well (i.e., Alaska). Omitting the southern states does not allow for a balancing of the outliers.

Allyson is selecting the states, so the selection process is not random.

Also, not every state has a chance to be a part of her survey. Thus, her survey does not produce a simple random sample. Try again. Correct!

The mom's method produces a simple random survey.

All the states have a chance to be selected in the survey. The selection method is random. They survey a large sample size.