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For the same eight constants $\pi,\sqrt2,e,\sqrt3,1.414213,2.718282,3.1415,1.732051$, what is the standard deviation to six decimal places?
A1.193021
B2.369863
C0.703730
D0.933194
Answer & Solution
Correct answer: C. 0.703730
1. Keep the eight values in the calculator's statistics list.
2. Select the population standard deviation key, not the sample key.
3. The calculator returns $\delta=0.703730$ to six decimal places.
4. Values near $1.19$ or $0.93$ arise from using the sample divisor or from dropping an entry; $2.37$ comes from reading the mean key by mistake.
_Source: NECTA ACSEE 2023 Advanced Mathematics 142/1, Question 1: Calculating Devices_