The formula for calculating Harmonic Mean (HM) is Report Please briefly explain why you feel this question should be reported . Report Cancel $$H = \frac{N}{X}$$ $$H = \frac{N}{{\sum {\left( {\frac{1}{x}} \right)} }}$$ $$H = \frac{{\sum {\left( x \right)\left( N \right)} }}{2}$$ none of these Show answer $$H = \frac{N}{{\sum {\left( {\frac{1}{x}} \right)} }}$$
