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Find the mean deviation of 1, 2, 3 and 4

Find the mean deviation of 1, 2, 3 and 4
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 1.0
  • B 1.5
  • C 2.0
  • D 2.5
Correct Answer: Option A
Explanation:
_
Mean deviation = Σ|x - x|
n
_
x = 2.5
= |1 - 2.5| + |2 - 2.5| + |3 - 2.5| + |4 - 2.5|
4
= 4/4 = 1

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