A restaurant chain wants to determine customers' opinions on their new menu.

Which choice BEST represents a sample?
A) 1 out of every 30 customers.
B) All customers of the restaurant.
C) 250 customers who filled out complaint cards.
D) 250 customers who spent more than $25.

That would give you a more random sample and more data from different groups if people. The reason you would want only 1 of 30 instead of everyone is because you don't know if a large group of similar people come in together, and that would give you an outlier. If your goal is to properly satisfy all visitors of your restaurant you need to prevent outliers in any way possible.

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A restaurant chain wants to determine customers' opinions on their new menu. Which choice BEST represents a sample? A) 1 out of every 30 customers. B) All customers of the restaurant. C) 250 customers who filled out complaint cards. D) 250 customers who spent more than $25.

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A restaurant chain wants to determine customers' opinions on their new menu.

Which choice BEST represents a sample?
A) 1 out of every 30 customers.
B) All customers of the restaurant.
C) 250 customers who filled out complaint cards.
D) 250 customers who spent more than $25.