1.

For two observations, the sum is S and product is P. What is the harmonic mean of these two observations?

A. \(\frac{2S}{P}\)
B. \(\frac{S}{(2P)}\)
C. \(\frac{2P}{S}\)
D. \(\frac{P}{(2S)}\)
Answer» D. \(\frac{P}{(2S)}\)


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