The mean of 2 - 4, 4 + t, 3 - 2t and t - 1 is

Assessment: JAMB UTME - Mathematics - 2014 Subject: General Mathematics

Question 1 Report

The mean of 2 - 4, 4 + t, 3 - 2t and t - 1 is

t

-t

2

-2

Answer Details

Mean x = $\frac{\sum x}{n}$
= [(2 - t) + (4 + t) + (3 - 2t) + (2 + t) + (t - 1) $\div$ ] 5
= [11 - 1 + 3t - 3t] $\div$ 5
= 10 $\div$ 5
= 2

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