Further MathematicsStatisticsWAEC
Find the variance of the numbers 2, 4, 6 and 8.
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Answer: D. 5
Mean 5; squared deviations 9, 1, 1, 9 sum to 20; 20 ÷ 4 = 5.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.