A psychologist treats 16 patients and records the number of sessions required to complete a behavioral therapy treatment for each patient. She computes SS = 800. Assuming the 16 patients constitute all patients under her care (so the population of her patients), what is the standard deviation for these data?
A. 53.3 sessions
B. 50 sessions
C. 7.1 sessions
D. 7.3 sessions
Ans: C
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