Question

The table shows the number of customers served by 3 counter crew members at a fast food outlet for 5 days in a particular week. The company emphasizes consistency and fast service at the counters. Based on the data given in the table, which of the following statements *must* be true?

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Accepted Answer

Zaniyah’s performance for the week was very consistent but also very slow.

Answer

Xenia’s performance for the week was the fastest and most consistent.

Answer

Yasmine’s performance for the week was the most inconsistent.

Answer

Yasmine’s performance every day for 5 days was always within 1 standard deviation of the mean.

Question 18 - Math: No Calculator Practice Test for the SAT Exam