Assistant Statistical Officer Paper II · 7 Measures of Central Tendency · APPSC Paper I

7.1 Measures of central tendency notes

2 notes, in reading order.

  1. 7.1.1Arithmetic, weighted, geometric and harmonic means and their relation

    The arithmetic mean shares the total equally, the geometric mean averages ratios and growth rates, the harmonic mean averages rates such as speeds, and for positive values always AM ≥ GM ≥ HM.

    Advanced · 9 min · Read here
  2. 7.1.2Median, mode and partition values (quartiles, deciles, percentiles) for raw and grouped data

    The median splits ordered data into two equal halves, quartiles, deciles and percentiles split it into 4, 10 and 100 equal parts, and the mode is the value that occurs most often; for grouped data each is found by interpolation inside its class.

    Advanced · 8 min · Read here

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