JAMB Economics 2008 Objective — Question 5

Question 5 of 50 from the Joint Admissions and Matriculation Board (JAMB) Economics 2008 Objective paper, with the correct answer and a full explanation.

Use the data below to answer questions 5 and 6, given class marks 62, 79, 83, 36, 62, 42, 62. Calculate the mean

A. 45.5
B. 55.6
C. 58.5Correct
D. 91.8

Explanation

mean(x-bar) = sum(fx)/sum(f) = 468/8 = 58.5, from the frequency table of the given scores (62, 29, 83, 36, 42, 42, 42, 42).

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