Merits Or Advantages Of Harmonic Mean
Some of the notable advantages of harmonic mean can be expressed as follows:
1. Rigidly Defined Method
Value of harmonic mean is always fixed as it is rigidly defined.
2. Appropriate For Rate And Time
Harmonic mean is suitable for the computation of average of time, rate and ratios.
3. Useful For Further Treatment
Harmonic mean is suitable for algebraic calculation and other mathematical treatments.
4. No Any Effect
Like geometric mean, harmonic mean is also not affected by sampling fluctuations.
Harmonic mean is totally based on all the items or observations of the series. So, all the items are required to determine it.
Demerits Or Disadvantages Of Harmonic Mean
Major drawbacks or disadvantages of harmonic mean are as follows:
1. Complex Method
Calculation of harmonic mean is a difficult process. Good mathematical knowledge is required to compute it. So, it is complex to determine and hard to understand.
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2. Unobtainable
Harmonic mean cannot be obtained if the value of any item in the series is zero.
Harmonic mean cannot be obtained if the value of any item in the series is zero.
3. Limited Scope
Its scope is limited than arithmetic mean.
4. High Effect
Harmonic mean is highly affected by the extreme values in the series.