The measure of central tendency used to divide the data into two groups is
a) Median b) Range c) Mode d) Arithmetic Mean
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The arithmetic mean is the most common measure of central tendency. It is computed by summing all the scores (sigma or Σ) and dividing by the number of scores (N): Where X is the mean, ∑x is the addition or summation of all scores, and N is the number of cases.
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