2009
Mathematics
JAMB
5, 8, 6 and k occur with frequency 3, 2, 4, and 1 respectively and have a mean of 5.7. Find the value of k?
A.
4
B.
3
C.
2
D.
1
Correct Answer: 2
Explanation
Mean = ∑fx/∑fx 5.7 =55+k/10 57 = 55 + k k = 57 - 55 k = 2
Mean = ∑fx/∑fx 5.7 =55+k/10 57 = 55 + k k = 57 - 55 k = 2THIS WEEK's
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