MathematicsStatisticsJAMB
Find the standard deviation of 3, 5 and 7, correct to 2 decimal places.
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Answer: B. 1.63
Mean 5; variance (4 + 0 + 4)/3 = 8/3; √(8/3) ≈ 1.63.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.