Find, correct to two decimal places, the mean of 9, 13, 16, 17, 19, 23,
MATHEMATICS
WAEC 2004
Find, correct to two decimal places, the mean of 9, 13, 16, 17, 19, 23, 24.
- A. 23.00
- B. 17.29
- C. 16.50
- D. 16.33
Correct Answer: B. 17.29
Explanation
Mean \(= \frac{sum\hspace{1mm}of\hspace{1mm}all\hspace{1mm}the\hspace{1mm}numbers}{Total\hspace{1mm}Number}\\
\frac{9+13+16+17+19+23+24}{7}\\
\frac{121}{7}=17.2857=17.29\)
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