Given the dataset D={2,2,4,4,10}D = \{2, 2, 4, 4, 10\}D={2,2,4,4,10}, what is the harmonic mean?
51/2+1/2+1/4+1/4+1/10\frac{5}{1/2 + 1/2 + 1/4 + 1/4 + 1/10}1/2+1/2+1/4+1/4+1/105
2+2+4+4+105\frac{2+2+4+4+10}{5}52+2+4+4+10
2×2×4×4×105\sqrt[5]{2 \times 2 \times 4 \times 4 \times 10}52×2×4×4×10
2.52.52.5