JAMB Economics 2019 Objective — Question 1
Question 1 of 40 from the Joint Admissions and Matriculation Board (JAMB) Economics 2019 Objective paper, with the correct answer and a full explanation.
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If the standard deviation of a given data is 8.2, find its variance
- A. 4.1
- B. 67.2Correct
- C. 82.0
- D. 91.8
Explanation
Variance is the square of the standard deviation: (8.2)² = 67.24 ≈ 67.2.
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